GENEVA · NOVEMBER 2026

$144,110per carat Lot 423 Phillips · 9 Nov Very fine sapphire and diamond ring 16.40 ct · Kashmir · No heat ×0.7 high estimate Estimate USD 2.26m – 3.54m USD 2,363,409$144,110 per carat $75,617per carat Lot 562 Christie's · 10 Nov Sapphire and diamond ring 23.72 ct · Kashmir · No heat ×0.7 high estimate Estimate USD 1.52m – 2.44m USD 1,793,632$75,617 per carat CHF 190k–280kestimateabout $71k per carat Lot 605 Sotheby's · Today 12:00 CET Sapphire and diamond ring 4.05 ct · Kashmir · No heat Lot 425 Phillips · 9 Nov Superb sapphire and diamond brooch, late 19th century 18.69 ct · Kashmir · No heat Estimate USD 1.01m – 1.50m Not sold CHF 200k–300kestimateabout $62k per carat Lot 586 Sotheby's · Today 12:00 CET Very fine sapphire ring 4.93 ct · Kashmir · No heat CHF 260k–420kestimateabout $54k per carat Lot 577 Sotheby's · Today 12:00 CET Attractive sapphire ring 7.62 ct · Kashmir · No heat CHF 300k–500kestimateabout $51k per carat Lot 624 Sotheby's · Today 12:00 CET Exceptional and rare sapphire and diamond ring 9.55 ct · Kashmir · No heat CHF 110k–180kestimateabout $48k per carat Lot 604 Sotheby's · Today 12:00 CET Sapphire ring 3.71 ct · Kashmir · No heat $58,770per carat Lot 335 Phillips · 9 Nov Sapphire ring 5.63 ct · Kashmir · No heat ×1.4 high estimate Estimate USD 153k – 244k USD 330,877$58,770 per carat $24,138per carat Lot 553 Christie's · 10 Nov Early 20th century sapphire and diamond ring 4.20 ct · Kashmir · No heat ×0.7 high estimate Estimate USD 97k – 146k USD 101,379$24,138 per carat $34,082per carat Lot 19 Christie's · 10 Nov Sapphire and diamond ring, monture Boucheron 17.39 ct · Burma · No heat ×1.2 high estimate Estimate USD 305k – 487k USD 592,678$34,082 per carat Lot 382 Phillips · 9 Nov Sapphire and diamond ring 17.71 ct · Burma · No heat Estimate USD 354k – 421k Not sold $18,099per carat Lot 606 Christie's · 10 Nov Early 20th century sapphire, natural pearl and diamond pendant, attributed to Cartier 14.65 ct · Ceylon · Heated ×0.7 high estimate Estimate USD 256k – 366k USD 265,146$18,099 per carat CHF 50k–65kestimateabout $21k per carat Lot 566 Sotheby's · Today 12:00 CET Sapphire ring 3.39 ct · Kashmir · No heat $21,749per carat Lot 561 Christie's · 10 Nov Tiffany & Co. Jean Schlumberger sapphire and diamond 'Bees' ring 12.55 ct · Ceylon · No heat ×0.9 high estimate Estimate USD 195k – 305k USD 272,944$21,749 per carat $40,090per carat Lot 575 Christie's · 10 Nov Late 19th century sapphire and diamond ring 8.17 ct · Kashmir · No heat ×1.8 high estimate Estimate USD 122k – 183k USD 327,533$40,090 per carat CHF 35k–50kestimateabout $18k per carat Lot 550 Sotheby's · Today 12:00 CET Sapphire ring 2.82 ct · Kashmir · No heat CHF 32k–40kestimateabout $18k per carat Lot 537 Phillips · 12 Nov Sapphire and diamond stickpin 2.42 ct · Kashmir · No heat $42,440per carat Lot 85 Christie's · 10 Nov Important sapphire ring 22.05 ct · Madagascar · No heat ×1.9 high estimate Estimate USD 305k – 487k USD 935,808$42,440 per carat CHF 240k–300kestimateabout $15k per carat Lot 571 Sotheby's · Today 12:00 CET Fine sapphire and diamond ring 22.28 ct · Ceylon · No heat CHF 260k–420kestimateabout $15k per carat Lot 642 Sotheby's · Today 12:00 CET Exceptional sapphire and diamond ring 28.46 ct · Ceylon · No heat CHF 350k–500kestimateabout $14k per carat Lot 573 Sotheby's · Today 12:00 CET Sapphire and diamond ring 36.68 36.68 ct · Burma · No heat CHF 50k–70kestimateabout $14k per carat Lot 888 Christie's · Closes 18 Nov 12:00 CET Mid-20th century sapphire and diamond ring 5.25 ct · Kashmir · No heat $23,183per carat Lot 596 Christie's · 10 Nov Cartier sapphire and diamond ring 12.11 ct · Burma · No heat ×1.4 high estimate Estimate USD 122k – 207k USD 280,742$23,183 per carat CHF 40k–80kestimateabout $13k per carat Lot 841 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 5.56 ct $18,406per carat Lot 549 Christie's · 10 Nov Mid-20th century sapphire and diamond ring 16.10 ct · Burma · No heat ×1.2 high estimate Estimate USD 171k – 244k USD 296,339$18,406 per carat $18,278per carat Lot 504 Christie's · 10 Nov Coloured sapphire and diamond ring 10.24 ct · Ceylon · No heat ×1.3 high estimate Estimate USD 104k – 146k USD 187,162$18,278 per carat CHF 85k–160kestimateabout $12k per carat Lot 607 Sotheby's · Today 12:00 CET Sapphire and diamond ring 12.36 ct · Ceylon · No heat Lot 8 Christie's · 10 Nov Van Cleef & Arpels sapphire and diamond ring 5.55 ct · Not determinable · Heated Estimate USD 49k – 85k Not sold CHF 580k–750kestimateabout $12k per carat Lot 603 Sotheby's · Today 12:00 CET Striking and impressive sapphire and diamond ring 69.44 ct · Ceylon · No heat CHF 130k–220kestimateabout $11k per carat Lot 558 Sotheby's · Today 12:00 CET Sapphire and diamond ring 18.66 ct · Ceylon (AGL, SSEF) / Burma (Gübelin, HRD) · No heat CHF 320k–480kestimateabout $11k per carat Lot 1053 Sotheby's · Today 17:00 CET Important sapphire, cultured pearl, mother-of-pearl and diamond necklace 43.07 ct · Ceylon · No heat $11,714per carat Lot 609 Christie's · 10 Nov Van Cleef & Arpels mid-20th century sapphire and diamond clip-brooch 43.94 ct · Ceylon · No heat ×0.8 high estimate Estimate USD 366k – 609k USD 514,694$11,714 per carat CHF 26k–42kestimateabout $11k per carat Lot 854 Sotheby's · Closes 13 Nov 11:00 CET Unmounted sapphire weighing 3.91 carats 3.91 ct · Ceylon · No heat $12,530per carat Lot 369 Phillips · 9 Nov Pink sapphire and diamond ring 5.03 ct · Burma · No heat ×1.0 high estimate Estimate USD 43k – 61k USD 63,024$12,530 per carat $37,856per carat Lot 563 Christie's · 10 Nov Sapphire and diamond ring 12.36 ct · Burma · No heat ×3.2 high estimate Estimate USD 104k – 146k USD 467,904$37,856 per carat $27,166per carat Lot 418 Phillips · 9 Nov Sapphire and diamond pendent necklace 9.28 ct · Ceylon · No heat ×2.4 high estimate Estimate USD 79k – 104k USD 252,097$27,166 per carat Lot 557 Christie's · 10 Nov Sapphire and diamond ring 9.14 ct · Madagascar · No heat Estimate USD 73k – 97k Not sold $35,603per carat Lot 612 Christie's · 10 Nov Important sapphire and diamond pendant/brooch 54.76 ct · Ceylon · No heat ×3.2 high estimate Estimate USD 402k – 609k USD 1,949,600$35,603 per carat $22,449per carat Lot 589 Christie's · 10 Nov Suarez sapphire and diamond ring 29.18 ct · Ceylon · No heat ×2.2 high estimate Estimate USD 207k – 292k USD 655,066$22,449 per carat CHF 40k–60kestimateabout $8k per carat Lot 778 Sotheby's · Closes 13 Nov 11:00 CET Unmounted pink sapphire weighing 7.20 carats 7.20 ct · Burma · No heat CHF 70k–100kestimateabout $8k per carat Lot 831 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 12.28 ct CHF 13k–22kestimateabout $8k per carat Lot 910 Sotheby's · Closes 13 Nov 11:00 CET Unmounted pink sapphire weighing 2.55 carats 2.55 ct · Burma · No heat CHF 850k–1.70mestimateabout $8k per carat Lot 1080 Sotheby's · Today 17:00 CET Highly impressive and historically significant sapphire, rock crystal and diamond bracelet 197.80 ct · Ceylon · No heat CHF 26k–42kestimateabout $8k per carat Lot 906 Sotheby's · Closes 13 Nov 11:00 CET Unmounted sapphire weighing 5.48 carats 5.48 ct · Ceylon · No heat $11,295per carat Lot 528 Christie's · 10 Nov Sapphire and diamond ring 16.57 ct · Ceylon · No heat ×1.3 high estimate Estimate USD 104k – 146k USD 187,162$11,295 per carat CHF 34k–50kestimateabout $7k per carat Lot 889 Sotheby's · Closes 13 Nov 11:00 CET Unmounted pink sapphire weighing 7.05 carats 7.05 ct · Ceylon · No heat $24,757per carat Lot 107 Christie's · 10 Nov Graff sapphire and diamond ring 27.09 ct · Burma · No heat ×2.8 high estimate Estimate USD 146k – 244k USD 670,662$24,757 per carat CHF 35k–50kestimateabout $7k per carat Lot 784 Sotheby's · Closes 13 Nov 11:00 CET Padparadscha sapphire and diamond ring 7.29 ct CHF 65k–85kestimateabout $7k per carat Lot 541 Sotheby's · Today 12:00 CET Sapphire and diamond ring 12.89 ct CHF 10k–15kestimateabout $7k per carat Lot 859 Sotheby's · Closes 13 Nov 11:00 CET Pink sapphire and diamond brooch 2.16 ct CHF 30k–50kestimateabout $7k per carat Lot 1054 Sotheby's · Today 17:00 CET Sapphire and diamond ring 7.04 ct · Burma · No heat $25,604per carat Lot 34 Christie's · 10 Nov Boucheron sapphire and diamond ring 7.31 ct · Ceylon ×3.1 high estimate Estimate USD 39k – 61k USD 187,162$25,604 per carat CHF 35k–50kestimateabout $7k per carat Lot 882 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 7.84 ct · Burma · No heat CHF 50k–70kestimateabout $6k per carat Lot 752 Christie's · Closes 18 Nov 12:00 CET de Grisogono sapphire and emerald ring 11.30 ct CHF 70k–100kestimateabout $6k per carat Lot 555 Sotheby's · Today 12:00 CET Sapphire ring 16.06 ct · Ceylon · No heat CHF 70k–85kestimateabout $6k per carat Lot 719 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 15.48 ct CHF 26k–42kestimateabout $6k per carat Lot 791 Sotheby's · Closes 13 Nov 11:00 CET Unmounted padparadscha sapphire weighing 6.87 carats 6.87 ct · Ceylon · No heat CHF 85k–170kestimateabout $6k per carat Lot 713 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 25.87 ct · Ceylon · No heat CHF 100k–200kestimateabout $6k per carat Lot 626 Sotheby's · Today 12:00 CET Sapphire and diamond ring 31.23 31.23 ct · Ceylon (Gübelin) / Burma (GRS) · No heat CHF 50k–65kestimateabout $6k per carat Lot 934 Sotheby's · Closes 13 Nov 11:00 CET Unmounted sapphire weighing 12.23 carats 12.23 ct · Ceylon · No heat CHF 70k–100kestimateabout $5k per carat Lot 918 Sotheby's · Closes 13 Nov 11:00 CET Unmounted sapphire weighing 19.29 carats 19.29 ct · Ceylon CHF 30k–50kestimateabout $5k per carat Lot 1017 Sotheby's · Today 17:00 CET Antique sapphire and diamond brooch 9.08 ct $6,869per carat Lot 373 Phillips · 9 Nov Sapphire and diamond pendent necklace/ring combination 7.34 ct · Ceylon · No heat ×1.1 high estimate Estimate USD 32k – 46k USD 50,419$6,869 per carat CHF 15k–20kestimateabout $5k per carat Lot 791 Christie's · Closes 18 Nov 12:00 CET Early 20th century sapphire and diamond ring 4.10 ct · Kashmir · No heat CHF 26k–42kestimateabout $5k per carat Lot 782 Sotheby's · Closes 13 Nov 11:00 CET Padparadscha sapphire ring 8.10 ct CHF 24k–35kestimateabout $5k per carat Lot 813 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 7.29 ct · Ceylon · No heat CHF 34k–50kestimateabout $5k per carat Lot 786 Sotheby's · Closes 13 Nov 11:00 CET Unmounted padparadscha sapphire weighing 10.52 carats 10.52 ct · Ceylon · No heat $6,531per carat Lot 377 Phillips · 9 Nov Sapphire and diamond ring 11.58 ct · Ceylon · No heat ×1.2 high estimate Estimate USD 43k – 61k USD 75,629$6,531 per carat CHF 8k–12kestimateabout $4k per carat Lot 930 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond pendant 2.98 ct CHF 60k–80kestimateabout $4k per carat Lot 929 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 21.73 ct CHF 60k–80kestimateabout $4k per carat Lot 531 Sotheby's · Today 12:00 CET Gold, sapphire and diamond bracelet 21.90 ct · Ceylon · No heat CHF 17k–26kestimateabout $4k per carat Lot 901 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 6.83 ct · Ceylon · No heat CHF 30k–50kestimateabout $4k per carat Lot 903 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 13.03 ct CHF 20k–30kestimateabout $4k per carat Lot 797 Christie's · Closes 18 Nov 12:00 CET Early 20th century sapphire and diamond ring 8.22 ct · Ceylon · No heat CHF 5k–7kestimateabout $3k per carat Lot 609 Phillips · 12 Nov Sapphire and diamond ring 2.06 ct CHF 50k–70kestimateabout $3k per carat Lot 768 Christie's · Closes 18 Nov 12:00 CET Single sapphire and diamond earring 22.24 ct · Not determinable · No heat Lot 376 Phillips · 9 Nov Sapphire and diamond ring 9.67 ct · Ceylon · No heat Estimate USD 24k – 37k Not sold CHF 50k–65kestimateabout $3k per carat Lot 851 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 22.38 ct CHF 15k–25kestimateabout $3k per carat Lot 681 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond pendant 8.47 ct CHF 25k–35kestimateabout $3k per carat Lot 880 Christie's · Closes 18 Nov 12:00 CET Coloured sapphire and diamond ring 12.93 ct · Not determinable · Heated $6,804per carat Lot 505 Christie's · 10 Nov Sapphire, turquoise and diamond sautoir 68.77 ct · Burma · No heat ×2.1 high estimate Estimate USD 146k – 219k USD 467,904$6,804 per carat CHF 80k–120kestimateabout $3k per carat Lot 787 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 46.43 ct · Ceylon · No heat CHF 5k–8kestimateabout $3k per carat Lot 580 Phillips · 12 Nov Sapphire and diamond ring 3.00 ct · Ceylon · No heat CHF 40k–60kestimateabout $3k per carat Lot 1066 Sotheby's · Today 17:00 CET Important belle epoque padparadscha sapphire and diamond brooch 23.64 ct · Ceylon · No heat CHF 40k–60kestimateabout $2k per carat Lot 622 Phillips · 12 Nov Sapphire, diamond and gem-set brooch 25.48 ct · Ceylon · No heat CHF 20k–30kestimateabout $2k per carat Lot 1055 Sotheby's · Today 17:00 CET Unmounted sapphire 13.19 ct CHF 18k–22kestimateabout $2k per carat Lot 843 Christie's · Closes 18 Nov 12:00 CET Sapphire ring 11.53 ct · Ceylon · No heat CHF 15k–25kestimateabout $2k per carat Lot 856 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 12.15 ct · Ceylon · No heat CHF 12k–18kestimateabout $2k per carat Lot 220 Christie's · Closes 17 Nov 12:00 CET Nikos koulis sapphire and diamond 'Universe line' ring 9.41 ct · Ceylon · Heated CHF 12k–17kestimateabout $2k per carat Lot 956 Sotheby's · Closes 13 Nov 11:00 CET Yellow sapphire and diamond 'Two bees' ring 10.08 ct CHF 42k–65kestimateabout $2k per carat Lot 545 Sotheby's · Today 12:00 CET Unmounted sapphire 38.64 ct CHF 35k–45kestimateabout $2k per carat Lot 658 Sotheby's · Closes 13 Nov 11:00 CET Sapphire ring 28.97 ct CHF 15k–25kestimateabout $2k per carat Lot 790 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond brooch/pendant 14.90 ct · Burma · No heat CHF 10k–15kestimateabout $1k per carat Lot 716 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 10.56 ct · Ceylon · Heated CHF 30k–50kestimateabout $1k per carat Lot 657 Sotheby's · Closes 13 Nov 11:00 CET Gold, sapphire and diamond bracelet 36.65 ct CHF 5k–8kestimateabout $1k per carat Lot 885 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring 6.43 ct · Ceylon · Heated CHF 6k–7kestimateabout $1k per carat Lot 858 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 7.39 ct CHF 9k–14kestimateabout $1k per carat Lot 547 Phillips · 12 Nov Sapphire and diamond ring 13.90 ct · Ceylon · No heat CHF 8k–12kestimateabout $518 per carat Lot 1042 Sotheby's · Today 17:00 CET Sapphire ring 23.52 ct · Ceylon · No heat $623,872price paid Lot 18 Christie's · 10 Nov Important pair of Van Cleef & Arpels sapphire and diamond earrings Ceylon · No heat ×0.6 high estimate Estimate USD 609k – 975k USD 623,872 CHF 350k–500kestimate Lot 1068 Sotheby's · Today 17:00 CET Very fine sapphire, emerald and diamond ring Kashmir · No heat $592,678price paid Lot 523 Christie's · 10 Nov Star sapphire and diamond ring Burma · No heat ×1.6 high estimate Estimate USD 244k – 366k USD 592,678 $561,485price paid Lot 530 Christie's · 10 Nov Reza pair of sapphire and diamond earrings Ceylon · No heat ×1.8 high estimate Estimate USD 207k – 317k USD 561,485 $218,355price paid Lot 515 Christie's · 10 Nov Pair of sapphire and diamond earrings Ceylon · No heat ×1.2 high estimate Estimate USD 122k – 183k USD 218,355 $358,726price paid Lot 607 Christie's · 10 Nov Early 20th century sapphire and pearl earrings Kashmir · No heat ×2.0 high estimate Estimate USD 122k – 183k USD 358,726 CHF 80k–120kestimate Lot 546 Sotheby's · Today 12:00 CET Pair of sapphire and diamond pendent earclips Ceylon · No heat $106,058price paid Lot 57 Christie's · 10 Nov Cartier sapphire and diamond ring Ceylon · No heat ×1.1 high estimate Estimate USD 73k – 97k USD 106,058 CHF 55k–70kestimate Lot 909 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond necklace CHF 40k–60kestimate Lot 683 Sotheby's · Closes 13 Nov 11:00 CET Pair of sapphire and diamond pendants CHF 24k–35kestimate Lot 871 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond ring Kashmir · No heat CHF 13k–22kestimate Lot 905 Sotheby's · Closes 13 Nov 11:00 CET Pair of sapphire, pink sapphire and diamond pendent earclips CHF 9k–13kestimate Lot 925 Sotheby's · Closes 13 Nov 11:00 CET Pink sapphire and diamond ring CHF 8k–12kestimate Lot 533 Phillips · 12 Nov Sapphire and diamond ring No heat $5,515price paid Lot 331 Phillips · 9 Nov Gold and sapphire pocket knife, late 19th century ×0.6 high estimate Estimate USD 6k – 9k USD 5,515 CHF 5k–7kestimate Lot 812 Christie's · Closes 18 Nov 12:00 CET Sapphire and diamond pendant CHF 2k–4kestimate Lot 599 Phillips · 12 Nov Sapphire and diamond ring

CHF 850k–1.30mestimateabout $261k per carat Lot 628 Sotheby's · Today 12:00 CET Impressive ruby and diamond ring 5.02 ct · Burma · No heat Lot 554 Christie's · 10 Nov Ruby and diamond ring 4.02 ct · Burma · No heat Estimate USD 305k – 512k Not sold $59,654per carat Lot 109 Christie's · 10 Nov Important Bulgari ruby and diamond 'Trombino' ring 14.38 ct · Burma · No heat ×0.7 high estimate Estimate USD 731k – 1.22m USD 857,824$59,654 per carat $63,157per carat Lot 348 Phillips · 9 Nov Ruby and diamond ring 4.74 ct · Burma · No heat ×1.0 high estimate Estimate USD 208k – 305k USD 299,365$63,157 per carat CHF 85k–160kestimateabout $41k per carat Lot 543 Sotheby's · Today 12:00 CET Unmounted ruby 3.68 ct · Burma · No heat CHF 70k–200kestimateabout $31k per carat Lot 539 Sotheby's · Today 12:00 CET Ruby and diamond ring 5.29 ct · Burma · No heat CHF 140k–200kestimateabout $30k per carat Lot 559 Sotheby's · Today 12:00 CET Ruby and diamond ring 6.88 ct · Burma · No heat Lot 587 Christie's · 10 Nov Ruby and diamond ring 3.53 ct · Burma · No heat Estimate USD 85k – 122k Not sold CHF 120k–200kestimateabout $28k per carat Lot 575 Sotheby's · Today 12:00 CET Ruby and diamond ring 7.00 ct · Burma · No heat $18,536per carat Lot 378 Phillips · 9 Nov Ruby and diamond brooch 1.19 ct · Burma · No heat ×0.6 high estimate Estimate USD 24k – 34k USD 22,058$18,536 per carat CHF 60k–75kestimateabout $24k per carat Lot 970 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 3.46 ct CHF 220k–380kestimateabout $22k per carat Lot 601 Sotheby's · Today 12:00 CET Impressive and important ruby ring 16.51 ct · Vietnam (SSEF, SSEF) / Afghanistan (Gübelin) · No heat CHF 24k–40kestimateabout $19k per carat Lot 567 Phillips · 12 Nov Gold and ruby ring, 1970s 2.00 ct · Burma · No heat $16,143per carat Lot 395 Phillips · 9 Nov Ruby and diamond ring 4.88 ct · Mozambique · No heat ×0.8 high estimate Estimate USD 61k – 104k USD 78,780$16,143 per carat CHF 34k–50kestimateabout $15k per carat Lot 810 Sotheby's · Closes 13 Nov 11:00 CET Unmounted ruby weighing 3.41 carats 3.41 ct · Burma · No heat Lot 384 Phillips · 9 Nov Ruby and diamond ring 3.46 ct · Mozambique · No heat Estimate USD 37k – 49k Not sold $11,478per carat Lot 414 Phillips · 9 Nov Ruby and diamond pendent necklace/ring combination 3.02 ct · Mozambique · No heat ×0.7 high estimate Estimate USD 24k – 49k USD 34,663$11,478 per carat CHF 20k–30kestimateabout $10k per carat Lot 907 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 3.01 ct $20,847per carat Lot 371 Phillips · 9 Nov Ruby and diamond ring 7.18 ct · Thailand · Heated ×1.8 high estimate Estimate USD 49k – 85k USD 149,683$20,847 per carat $9,578per carat Lot 411 Phillips · 9 Nov Ruby and diamond ring 3.29 ct · Thailand · No heat ×0.9 high estimate Estimate USD 24k – 37k USD 31,512$9,578 per carat CHF 30k–50kestimateabout $8k per carat Lot 826 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring, monture Cartier 5.86 ct · Burma · No heat CHF 26k–42kestimateabout $8k per carat Lot 937 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 5.41 ct $6,340per carat Lot 590 Christie's · 10 Nov Bulgari ruby and diamond ring 13.53 ct · Not determinable · Heated ×0.7 high estimate Estimate USD 79k – 122k USD 85,782$6,340 per carat CHF 12k–18kestimateabout $7k per carat Lot 762 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring/pendant 2.53 ct · Burma · No heat CHF 9k–13kestimateabout $7k per carat Lot 927 Sotheby's · Closes 13 Nov 11:00 CET Unmounted ruby weighing 1.93 carats 1.93 ct · Burma · No heat CHF 13k–18kestimateabout $6k per carat Lot 789 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring 3.02 ct · Mozambique · No heat CHF 30k–50kestimateabout $5k per carat Lot 915 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 9.82 ct CHF 17k–26kestimateabout $5k per carat Lot 939 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 5.68 ct CHF 13k–22kestimateabout $4k per carat Lot 818 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 5.05 ct CHF 6k–8kestimateabout $4k per carat Lot 933 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 1.97 ct CHF 30k–50kestimateabout $3k per carat Lot 926 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 14.26 ct CHF 2k–4kestimateabout $3k per carat Lot 591 Phillips · 12 Nov Ruby and diamond ring 1.30 ct · Burma · No heat CHF 13k–18kestimateabout $2k per carat Lot 771 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring 7.87 ct · Burma · No heat CHF 420k–600kestimate Lot 574 Sotheby's · Today 12:00 CET Very fine pair of ruby and diamond earclips Burma · No heat CHF 85k–130kestimate Lot 809 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond bracelet $44,117price paid Lot 390 Phillips · 9 Nov Ruby and diamond ring Burma · No heat ×0.9 high estimate Estimate USD 29k – 49k USD 44,117 $63,024price paid Lot 413 Phillips · 9 Nov Pair of ruby and diamond earrings Burma · No heat ×1.4 high estimate Estimate USD 32k – 46k USD 63,024 CHF 15k–20kestimate Lot 724 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring Burma · No heat CHF 12k–18kestimate Lot 202 Christie's · Closes 17 Nov 12:00 CET Ruby, coloured diamond and diamond ring Vietnam · No heat Lot 408 Phillips · 9 Nov Ruby and diamond ring Heated Estimate USD 15k – 21k Not sold CHF 10k–15kestimate Lot 861 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring Thailand · No heat CHF 10k–15kestimate Lot 794 Christie's · Closes 18 Nov 12:00 CET Art Deco ruby, emerald, diamond and enamel brooch CHF 8k–12kestimate Lot 847 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring Burma · Heated CHF 7k–10kestimate Lot 579 Phillips · 12 Nov Pair of ruby and diamond earrings Burma · No heat CHF 6k–8kestimate Lot 862 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond brooch Burma · No heat CHF 5k–8kestimate Lot 594 Phillips · 12 Nov Pair of ruby and diamond earrings Burma · No heat CHF 4k–6kestimate Lot 221 Christie's · Closes 17 Nov 12:00 CET Ruby ring

$63,341per carat Lot 388 Phillips · 9 Nov Very fine emerald and diamond brooch, late 19th century 7.96 ct · Colombia · No oil ×0.7 high estimate Estimate USD 489k – 733k USD 504,194$63,341 per carat $219,918per carat Lot 598 Christie's · 10 Nov Emerald and diamond ring 5.39 ct · Colombia ×3.9 high estimate Estimate USD 183k – 305k USD 1,185,357$219,918 per carat CHF 85k–160kestimateabout $38k per carat Lot 565 Sotheby's · Today 12:00 CET Very fine emerald pendent necklace 3.98 ct · Colombia · No oil $46,837per carat Lot 570 Christie's · 10 Nov Emerald and diamond ring 6.66 ct · Colombia ×1.3 high estimate Estimate USD 158k – 244k USD 311,936$46,837 per carat CHF 280k–460kestimateabout $30k per carat Lot 623 Sotheby's · Today 12:00 CET Emerald and diamond ring 15.13 15.13 ct · Colombia · No oil $41,159per carat Lot 114 Christie's · 10 Nov David morris emerald and diamond ring 17.81 ct · Colombia ×1.2 high estimate Estimate USD 390k – 609k USD 733,050$41,159 per carat CHF 120k–170kestimateabout $25k per carat Lot 639 Sotheby's · Today 12:00 CET Emerald and diamond ring 7.04 ct · Colombia · Minor oil $19,176per carat Lot 603 Christie's · 10 Nov Cartier Art Deco emerald and diamond ring 6.10 ct · Colombia · Minor oil ×0.9 high estimate Estimate USD 91k – 134k USD 116,976$19,176 per carat $24,016per carat Lot 86 Christie's · 10 Nov David morris emerald and diamond ring 22.73 ct · Colombia ×1.1 high estimate Estimate USD 305k – 487k USD 545,888$24,016 per carat Lot 383 Phillips · 9 Nov Emerald and diamond ring 3.82 ct · Colombia · Minor oil Estimate USD 43k – 61k Not sold $44,704per carat Lot 33 Christie's · 10 Nov Fred emerald and diamond ring 6.28 ct · Colombia · Minor oil ×2.9 high estimate Estimate USD 73k – 97k USD 280,742$44,704 per carat CHF 17k–26kestimateabout $13k per carat Lot 833 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 2.04 ct $11,915per carat Lot 397 Phillips · 9 Nov Emerald and diamond ring 16.53 ct · Russia · No oil ×0.8 high estimate Estimate USD 153k – 244k USD 196,951$11,915 per carat CHF 170k–280kestimateabout $12k per carat Lot 578 Sotheby's · Today 12:00 CET Emerald and diamond ring 22.86 ct · Colombia · Minor oil CHF 24k–40kestimateabout $12k per carat Lot 851 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond ring 3.29 ct · Colombia · Minor oil CHF 24k–45kestimateabout $12k per carat Lot 833 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels emerald and diamond ring 3.59 ct · Colombia · No oil Lot 420 Phillips · 9 Nov Emerald and diamond ring 17.36 ct · Colombia · No oil Estimate USD 147k – 220k Not sold $8,348per carat Lot 385 Phillips · 9 Nov Emerald and diamond ring 7.55 ct · Colombia · No oil ×0.6 high estimate Estimate USD 61k – 98k USD 63,024$8,348 per carat $10,966per carat Lot 332 Phillips · 9 Nov Emerald, diamond and gold bracelet, mid 19th century 5.46 ct · Colombia · Moderate oil ×0.9 high estimate Estimate USD 46k – 67k USD 59,873$10,966 per carat $11,291per carat Lot 359 Phillips · 9 Nov Emerald and diamond brooch 3.07 ct · Colombia · No oil ×1.0 high estimate Estimate USD 27k – 34k USD 34,663$11,291 per carat $13,304per carat Lot 368 Phillips · 9 Nov Emerald and diamond brooch, circa 1890 8.29 ct · Colombia · Minor oil ×1.4 high estimate Estimate USD 67k – 79k USD 110,292$13,304 per carat Lot 70 Christie's · 10 Nov Emerald, diamond and enamel ring 6.94 ct · Zambia Estimate USD 49k – 73k Not sold CHF 40k–60kestimateabout $9k per carat Lot 839 Christie's · Closes 18 Nov 12:00 CET Early 20th century emerald and diamond ring 6.96 ct Lot 380 Phillips · 9 Nov Emerald and diamond ring 7.78 ct · Colombia · Minor oil Estimate USD 49k – 85k Not sold CHF 45k–60kestimateabout $8k per carat Lot 1051 Sotheby's · Today 17:00 CET Fine emerald and diamond ring 7.89 ct · Colombia · Minor oil CHF 50k–65kestimateabout $8k per carat Lot 538 Sotheby's · Today 12:00 CET Emerald and diamond ring 8.69 ct · Colombia · No oil Lot 365 Phillips · 9 Nov Emerald and diamond ring 4.98 ct · Colombia · Minor oil Estimate USD 29k – 39k Not sold CHF 16k–24kestimateabout $7k per carat Lot 593 Phillips · 12 Nov Emerald and diamond ring 3.69 ct · Zambia · Minor oil CHF 10k–14kestimateabout $7k per carat Lot 541 Phillips · 12 Nov Emerald and diamond ring, circa 1920 2.22 ct · Colombia · Minor oil CHF 40k–60kestimateabout $7k per carat Lot 608 Sotheby's · Today 12:00 CET Emerald and diamond ring 9.31 ct · Colombia · Moderate oil CHF 15k–25kestimateabout $6k per carat Lot 722 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond ring, monture Harry Winston 3.75 ct · Colombia · Minor oil CHF 7k–10kestimateabout $6k per carat Lot 920 Sotheby's · Closes 13 Nov 11:00 CET Unmounted emerald weighing 1.63 carats 1.63 ct · Colombia · No oil $18,659per carat Lot 576 Christie's · 10 Nov Emerald ring 14.21 ct · Colombia · Minor oil ×2.7 high estimate Estimate USD 67k – 97k USD 265,146$18,659 per carat CHF 7k–9kestimateabout $6k per carat Lot 574 Phillips · 12 Nov Emerald and diamond ring 1.71 ct · Colombia · Insignificant oil CHF 30k–45kestimateabout $6k per carat Lot 827 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 8.21 ct CHF 62k–80kestimateabout $5k per carat Lot 614 Sotheby's · Today 12:00 CET Emerald and diamond pendant 17.91 ct · Colombia · No oil CHF 24k–36kestimateabout $5k per carat Lot 690 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 7.88 ct CHF 12k–16kestimateabout $4k per carat Lot 620 Phillips · 12 Nov Emerald ring 3.94 ct · Zambia · No oil CHF 5k–7kestimateabout $4k per carat Lot 576 Phillips · 12 Nov Emerald and diamond ring 1.76 ct · Colombia · No oil CHF 70k–120kestimateabout $4k per carat Lot 750 Christie's · Closes 18 Nov 12:00 CET Gübelin emerald and diamond pendant/ring 30.36 ct · Colombia · Minor oil CHF 70k–100kestimateabout $4k per carat Lot 1071 Sotheby's · Today 17:00 CET Superb antique emerald and diamond bangle 27.38 ct · Colombia · Minor oil CHF 2k–4kestimateabout $3k per carat Lot 603 Phillips · 12 Nov Emerald and diamond ring 1.19 ct · Colombia · No oil $7,677per carat Lot 559 Christie's · 10 Nov 'Aurora borealis' emerald emerald and diamond ring 79.23 ct · Colombia · Minor oil ×2.1 high estimate Estimate USD 207k – 292k USD 608,275$7,677 per carat CHF 12k–16kestimateabout $3k per carat Lot 589 Phillips · 12 Nov Emerald and diamond ring 5.45 ct · Colombia · Insignificant oil CHF 13k–22kestimateabout $3k per carat Lot 922 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 7.00 ct CHF 3k–5kestimateabout $3k per carat Lot 526 Phillips · 12 Nov Emerald and diamond ring 1.93 ct CHF 35k–50kestimateabout $2k per carat Lot 544 Sotheby's · Today 12:00 CET Emerald and diamond ring 20.90 ct · Colombia · Moderate oil $2,250per carat Lot 577 Christie's · 10 Nov Emerald and diamond ring 12.48 ct · Colombia ×0.8 high estimate Estimate USD 24k – 37k USD 28,074$2,250 per carat CHF 12k–18kestimateabout $2k per carat Lot 1063 Sotheby's · Today 17:00 CET Emerald and diamond ring 7.58 ct · Colombia · Minor oil CHF 10k–15kestimateabout $2k per carat Lot 1039 Sotheby's · Today 17:00 CET Emerald and diamond bracelet 7.21 ct · Colombia · Moderate oil CHF 30k–50kestimateabout $2k per carat Lot 917 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 25.74 ct CHF 40k–60kestimateabout $2k per carat Lot 940 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 33.28 ct $1,820per carat Lot 375 Phillips · 9 Nov Emerald, diamond and tsavorite garnet ring 33.77 ct · Colombia · Moderate oil ×0.7 high estimate Estimate USD 29k – 85k USD 61,449$1,820 per carat $1,369per carat Lot 374 Phillips · 9 Nov Emerald and diamond ring 34.54 ct · Zambia · Moderate oil ×0.6 high estimate Estimate USD 37k – 73k USD 47,268$1,369 per carat CHF 4k–7kestimateabout $2k per carat Lot 532 Phillips · 12 Nov Emerald and diamond ring 4.09 ct · No oil CHF 6k–8kestimateabout $2k per carat Lot 829 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring 5.39 ct CHF 18k–25kestimateabout $1k per carat Lot 842 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond ring 19.70 ct · Colombia · Minor oil CHF 40k–70kestimateabout $865 per carat Lot 1047 Sotheby's · Today 17:00 CET Emerald and diamond necklace 77.51 ct · Colombia · Moderate oil CHF 7k–10kestimateabout $154 per carat Lot 1011 Sotheby's · Today 17:00 CET Emerald and diamond pendant 67.21 ct $1,029,389price paid Lot 106 Christie's · 10 Nov Important pair of Graff emerald and diamond earrings Colombia · Minor oil ×0.7 high estimate Estimate USD 914k – 1.46m USD 1,029,389 Lot 424 Phillips · 9 Nov Pair of magnificent emerald and diamond ear clips Colombia · No oil Estimate USD 733k – 1.10m Not sold $1,341,325price paid Lot 108 Christie's · 10 Nov Impressive pair of Graff emerald and diamond earrings Colombia · Minor oil ×1.4 high estimate Estimate USD 609k – 975k USD 1,341,325 $733,050price paid Lot 87 Christie's · 10 Nov Important pair of david morris emerald and diamond earrings Colombia ×0.9 high estimate Estimate USD 487k – 792k USD 733,050 CHF 170k–250kestimate Lot 557 Sotheby's · Today 12:00 CET Pair of emerald and diamond earrings Colombia · Minor oil $155,968price paid Lot 600 Christie's · 10 Nov Cartier Art Deco emerald and diamond flower brooch Colombia · Minor oil ×0.9 high estimate Estimate USD 122k – 183k USD 155,968 CHF 70k–100kestimate Lot 591 Sotheby's · Today 12:00 CET Special commission pair of emerald, pink sapphire and diamond earrings Colombia · Moderate oil $85,782price paid Lot 53 Christie's · 10 Nov Graff emerald ring Colombia ×0.9 high estimate Estimate USD 73k – 97k USD 85,782 CHF 34k–50kestimate Lot 687 Sotheby's · Closes 13 Nov 11:00 CET Pair of emerald and diamond pendent earrings CHF 24k–45kestimate Lot 720 Christie's · Closes 18 Nov 12:00 CET Pair of emerald and diamond earrings Colombia · Moderate oil CHF 15k–30kestimate Lot 823 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond pendant CHF 12k–18kestimate Lot 765 Christie's · Closes 18 Nov 12:00 CET Pair of emerald and diamond earrings Colombia · Minor oil CHF 10k–15kestimate Lot 708 Christie's · Closes 18 Nov 12:00 CET Bulgari emerald ring Russia · Moderate oil CHF 10k–15kestimate Lot 848 Christie's · Closes 18 Nov 12:00 CET Emerald, diamond, seed pearl and enamel bracelet CHF 7k–10kestimate Lot 830 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond necklace CHF 6k–10kestimate Lot 836 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond brooch Lot 366 Phillips · 9 Nov Emerald and diamond necklace, early 20th century Minor oil Estimate USD 7k – 10k Not sold CHF 4k–6kestimate Lot 206 Christie's · Closes 17 Nov 12:00 CET Emerald and diamond ring, monture Boucheron CHF 4k–6kestimate Lot 894 Sotheby's · Closes 13 Nov 11:00 CET Two emerald and diamond rings CHF 4k–5kestimate Lot 270 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels emerald and diamond ring

CHF 1.70m–2.50mestimateabout $888k per carat Lot 643 Sotheby's · Today 12:00 CET Stunning fancy deep blue diamond and diamond ring 2.88 ct · Fancy Deep Blue · VS2 $613,616per carat Lot 613 Christie's · 10 Nov 'The Bulgari pink' extraordinary Bulgari coloured diamond and diamond ring 24.00 ct · Fancy Intense Pink · VVS2 ×0.8 high estimate Estimate USD 12.2m – 18.3m USD 14,726,791$613,616 per carat CHF 3.30m–5.00mestimateabout $586k per carat Lot 644 Sotheby's · Today 12:00 CET Superb unmounted fancy intense pink diamond 8.63 ct · Fancy Intense Pink · VS2 CHF 850k–1.60mestimateabout $439k per carat Lot 610 Sotheby's · Today 12:00 CET Superb unmounted fancy intense green diamond 3.40 ct · Fancy Intense Green · VS2 CHF 1.50m–2.50mestimateabout $300k per carat Lot 638 Sotheby's · Today 12:00 CET Attractive unmounted fancy pink diamond 8.11 ct · Fancy Pink · VVS1 CHF 500k–850kestimateabout $273k per carat Lot 609 Sotheby's · Today 12:00 CET Attractive fancy purplish pink diamond ring 3.01 ct · Fancy Purplish Pink · Internally Flawless CHF 180k–260kestimateabout $190k per carat Lot 627 Sotheby's · Today 12:00 CET Fancy vivid green-blue diamond and diamond ring 1.41 1.41 ct · Fancy Vivid Green-Blue · I2 $325,498per carat Lot 610 Christie's · 10 Nov Coloured diamond and diamond ring, mounted by Harry Winston 2.30 ct · Fancy Blue · SI1 ×1.5 high estimate Estimate USD 305k – 512k USD 748,646$325,498 per carat $111,939per carat Lot 104 Christie's · 10 Nov Rare david morris coloured diamond and diamond ring 14.63 ct · Fancy Orangy Pink · VVS1 ×0.6 high estimate Estimate USD 1.58m – 2.56m USD 1,637,664$111,939 per carat $99,253per carat Lot 517 Christie's · 10 Nov Coloured diamond and diamond ring 1.10 ct · Fancy Intense Purplish Pink · I2 ×0.9 high estimate Estimate USD 79k – 122k USD 109,178$99,253 per carat CHF 850k–1.60mestimateabout $83k per carat Lot 582 Sotheby's · Today 12:00 CET Exceptional fancy vivid yellow diamond ring 18.03 ct · Fancy Vivid Yellow · VVS2 $98,126per carat Lot 520 Christie's · 10 Nov Coloured diamond and diamond ring 1.51 ct · Fancy Grayish Blue · SI1 ×1.2 high estimate Estimate USD 79k – 122k USD 148,170$98,126 per carat CHF 34k–50kestimateabout $49k per carat Lot 700 Sotheby's · Closes 13 Nov 11:00 CET Unmounted fancy pink diamond weighing 1.04 carats 1.04 ct · Fancy Pink CHF 24k–40kestimateabout $37k per carat Lot 821 Christie's · Closes 18 Nov 12:00 CET Coloured diamond and diamond ring 1.04 ct · Fancy Light Pink $264,616per carat Lot 518 Christie's · 10 Nov Coloured diamond and enamel ring 5.01 ct · Fancy Intense Bluish Green · SI1 ×6.0 high estimate Estimate USD 146k – 219k USD 1,325,728$264,616 per carat $45,086per carat Lot 103 Christie's · 10 Nov Graff diamond and coloured diamond 'En tremblant' flower brooch 11.07 ct · F colour · VS1 ×1.0 high estimate Estimate USD 305k – 487k USD 499,098$45,086 per carat CHF 60k–75kestimateabout $27k per carat Lot 549 Sotheby's · Today 12:00 CET Fancy vivid yellow diamond and diamond ring 3.06 ct · Fancy Vivid Yellow · VS2 CHF 20k–30kestimateabout $23k per carat Lot 867 Christie's · Closes 18 Nov 12:00 CET Coloured diamond and diamond pendent necklace 1.32 ct · Fancy Intense Yellow · VVS2 $52,194per carat Lot 519 Christie's · 10 Nov Coloured diamond and diamond ring 5.08 ct · Fancy Vivid Orangy Yellow · SI1 ×1.8 high estimate Estimate USD 85k – 146k USD 265,146$52,194 per carat Lot 68 Christie's · 10 Nov Graff coloured diamond and diamond 'Large bulls eye' necklace 10.35 ct · Fancy Light Yellow · VS2 Estimate USD 146k – 244k Not sold CHF 220k–320kestimateabout $18k per carat Lot 616 Sotheby's · Today 12:00 CET Very fine unmounted fancy intense yellow diamond 18.06 ct · Fancy Intense Yellow · VS1 $21,513per carat Lot 77 Christie's · 10 Nov Van Cleef & Arpels diamond and coloured diamond ring 2.32 ct ×1.0 high estimate Estimate USD 30k – 49k USD 49,910$21,513 per carat $12,354per carat Lot 78 Christie's · 10 Nov Van Cleef & Arpels coloured diamond and diamond ring 2.02 ct ×0.7 high estimate Estimate USD 24k – 37k USD 24,955$12,354 per carat $17,356per carat Lot 599 Christie's · 10 Nov Exceptional unmounted coloured diamond 71.89 ct · Fancy Light Yellow · VS2 ×1.1 high estimate Estimate USD 731k – 1.10m USD 1,247,744$17,356 per carat $17,046per carat Lot 101 Christie's · 10 Nov Chopard coloured diamond and diamond ring 20.13 ct · Fancy Intense Yellow · VS2 ×1.1 high estimate Estimate USD 195k – 305k USD 343,130$17,046 per carat CHF 9k–13kestimateabout $12k per carat Lot 706 Sotheby's · Closes 13 Nov 11:00 CET Fancy brown-pink diamond and coloured diamond ring 1.10 ct CHF 55k–75kestimateabout $10k per carat Lot 738 Sotheby's · Closes 13 Nov 11:00 CET Fancy light yellow diamond and coloured diamond ring 8.07 ct CHF 30k–50kestimateabout $6k per carat Lot 807 Christie's · Closes 18 Nov 12:00 CET Coloured diamond ring 8.42 ct · Fancy Intense Yellow · VS2 CHF 7k–10kestimateabout $5k per carat Lot 575 Phillips · 12 Nov Fancy brown-orange diamond and diamond ring 2.04 ct · Fancy Brown-Orange · SI2 CHF 4k–7kestimateabout $5k per carat Lot 585 Phillips · 12 Nov Fancy deep yellow diamond and diamond ring 1.38 ct · Fancy Deep Yellow · SI1 CHF 20k–30kestimateabout $4k per carat Lot 739 Christie's · Closes 18 Nov 12:00 CET Diamond and coloured diamond ring 7.27 ct CHF 10k–15kestimateabout $3k per carat Lot 804 Sotheby's · Closes 13 Nov 11:00 CET Diamond and coloured diamond ring 5.74 ct $71,899per carat, all stones Lot 419 Phillips · 9 Nov Collection of nine fancy colour diamonds 9 stones, 7.67 ct in total ×0.7 high estimate Estimate USD 464k – 806k USD 551,462$71,899 per carat $265,146price paid Lot 113 Christie's · 10 Nov David morris diamond and coloured diamond 'Anemone' ring D colour · VS2 ×0.9 high estimate Estimate USD 195k – 305k USD 265,146 $116,976price paid Lot 67 Christie's · 10 Nov Graff pair of coloured diamond and diamond 'Gypsy' earrings ×1.2 high estimate Estimate USD 73k – 97k USD 116,976 $101,379price paid Lot 102 Christie's · 10 Nov Graff pair of coloured diamond flower earrings Fancy Intense Yellow · VS1 ×1.4 high estimate Estimate USD 49k – 73k USD 101,379 $59,268price paid Lot 100 Christie's · 10 Nov Graff pair of coloured diamond flower earrings ×1.0 high estimate Estimate USD 39k – 61k USD 59,268 CHF 32k–50kestimate Lot 737 Christie's · Closes 18 Nov 12:00 CET Pair of coloured diamond and diamond earrings Fancy Yellow · VVS2 $40,966price paid Lot 393 Phillips · 9 Nov Coloured diamond and diamond pendent necklace/ring combination Fancy Yellow · SI2 ×1.4 high estimate Estimate USD 15k – 29k USD 40,966 CHF 8k–12kestimate Lot 858 Christie's · Closes 18 Nov 12:00 CET Fred pair of coloured diamond and diamond earrings Fancy Yellow · VVS2 CHF 2k–4kestimate Lot 584 Phillips · 12 Nov Fancy deep orange-yellow diamond and diamond ring Fancy Deep Orange-Yellow · SI2

$83,125per carat Lot 526 Christie's · 10 Nov Diamond bracelet, monture Cartier 7.13 ct · E colour ×0.8 high estimate Estimate USD 487k – 731k USD 592,678$83,125 per carat $70,346per carat Lot 546 Christie's · 10 Nov Exceptional Harry Winston diamond ring 15.52 ct · D colour · VVS2 ×0.7 high estimate Estimate USD 853k – 1.46m USD 1,091,776$70,346 per carat $63,686per carat Lot 111 Christie's · 10 Nov Graff diamond necklace 12.49 ct · VVS2 ×0.8 high estimate Estimate USD 609k – 975k USD 795,437$63,686 per carat CHF 350k–500kestimateabout $57k per carat Lot 579 Sotheby's · Today 12:00 CET Diamond ring 9.01 ct · D · VVS1 CHF 380k–550kestimateabout $56k per carat Lot 619 Sotheby's · Today 12:00 CET Charming and rare diamond ring 10.05 ct · D · VVS1 $46,740per carat Lot 611 Christie's · 10 Nov 'The star of sierra leone vi' Harry Winston diamond ring 21.69 ct · D colour · VVS2 ×0.7 high estimate Estimate USD 975k – 1.46m USD 1,013,792$46,740 per carat $42,865per carat Lot 110 Christie's · 10 Nov Mauboussin diamond ring 10.37 ct · D colour · VVS1 ×0.7 high estimate Estimate USD 390k – 609k USD 444,509$42,865 per carat $74,955per carat Lot 387 Phillips · 9 Nov Fine diamond ring 10.09 ct · D · Flawless ×1.4 high estimate Estimate USD 354k – 550k USD 756,291$74,955 per carat $40,829per carat Lot 97 Christie's · 10 Nov Diamond ring 11.46 ct · E colour · VVS2 ×0.9 high estimate Estimate USD 366k – 548k USD 467,904$40,829 per carat $42,993per carat Lot 597 Christie's · 10 Nov Harry Winston diamond ring 13.06 ct · D colour · VS2 ×0.9 high estimate Estimate USD 426k – 609k USD 561,485$42,993 per carat CHF 150k–250kestimateabout $35k per carat Lot 576 Sotheby's · Today 12:00 CET Unmounted diamond 6.96 ct · D · Internally Flawless $51,277per carat Lot 551 Christie's · 10 Nov Diamond ring 10.95 ct · D colour · VVS2 ×1.4 high estimate Estimate USD 305k – 390k USD 561,485$51,277 per carat CHF 170k–250kestimateabout $28k per carat Lot 556 Sotheby's · Today 12:00 CET Diamond ring 9.16 ct · E · VS1 $38,085per carat Lot 569 Christie's · 10 Nov Diamond ring 8.60 ct · F colour · VVS2 ×1.3 high estimate Estimate USD 146k – 244k USD 327,533$38,085 per carat $22,123per carat Lot 550 Christie's · 10 Nov Diamond ring, monture Cartier 7.05 ct · F colour · VVS2 ×0.9 high estimate Estimate USD 110k – 171k USD 155,968$22,123 per carat $20,796per carat Lot 512 Christie's · 10 Nov Unmounted diamond 6.00 ct · F colour · VS1 ×1.0 high estimate Estimate USD 91k – 122k USD 124,774$20,796 per carat $25,010per carat Lot 421 Phillips · 9 Nov Diamond ring 20.16 ct · H · VS1 ×1.1 high estimate Estimate USD 232k – 452k USD 504,194$25,010 per carat $16,445per carat Lot 105 Christie's · 10 Nov de Grisogono diamond and emerald ring 9.01 ct · E colour · SI1 ×0.8 high estimate Estimate USD 122k – 183k USD 148,170$16,445 per carat $12,460per carat Lot 516 Christie's · 10 Nov Diamond ring 21.28 ct · VVS2 ×0.7 high estimate Estimate USD 256k – 390k USD 265,146$12,460 per carat $14,202per carat Lot 591 Christie's · 10 Nov Diamond ring 6.04 ct · D colour · VS1 ×0.8 high estimate Estimate USD 73k – 110k USD 85,782$14,202 per carat $10,610per carat Lot 593 Christie's · 10 Nov Diamond ring 10.29 ct · M colour · VVS2 ×0.6 high estimate Estimate USD 104k – 195k USD 109,178$10,610 per carat $15,262per carat Lot 571 Christie's · 10 Nov Diamond necklace 21.46 ct · M colour · VS2 ×1.1 high estimate Estimate USD 207k – 292k USD 327,533$15,262 per carat CHF 130k–200kestimateabout $8k per carat Lot 595 Sotheby's · Today 12:00 CET Unmounted diamond 25.90 ct · VS1 CHF 75k–100kestimateabout $7k per carat Lot 701 Sotheby's · Closes 13 Nov 11:00 CET Fancy brown-yellow diamond and diamond pendant/brooch 16.20 ct CHF 34k–50kestimateabout $5k per carat Lot 702 Sotheby's · Closes 13 Nov 11:00 CET Fancy light yellow diamond and diamond ring 10.82 ct CHF 30k–50kestimateabout $4k per carat Lot 865 Sotheby's · Closes 13 Nov 11:00 CET Diamond pendant 11.53 ct $7,169per carat Lot 406 Phillips · 9 Nov Diamond ring 10.11 ct · Z · VVS2 ×1.3 high estimate Estimate USD 29k – 55k USD 72,478$7,169 per carat CHF 350k–500kestimate Lot 637 Sotheby's · Today 12:00 CET Elegant pair of diamond pendent earrings D · VVS2 CHF 140k–200kestimate Lot 581 Sotheby's · Today 12:00 CET Pair of diamond earrings D · VS1 CHF 80k–150kestimate Lot 612 Sotheby's · Today 12:00 CET Diamond ring D · SI1 Lot 356 Phillips · 9 Nov Diamond necklace Estimate USD 92k – 122k Not sold CHF 70k–90kestimate Lot 805 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond earrings CHF 42k–60kestimate Lot 704 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond pendent earrings

Lot 346 Phillips · 9 Nov Natural pearl and diamond ring, late 19th century 1.70 ct · SI1 Estimate USD 12k – 18k Not sold CHF 4k–6kestimateabout $5k per carat Lot 682 Sotheby's · Closes 13 Nov 11:00 CET Cultured pearl and diamond choker 1.28 ct $2,679per carat Lot 389 Phillips · 9 Nov Natural pearl and diamond ring 10.00 ct ×0.9 high estimate Estimate USD 21k – 29k USD 26,785$2,679 per carat CHF 160k–260kestimate Lot 630 Sotheby's · Today 12:00 CET Elegant pair of natural pearl and diamond pendent earclips $441,170price paid Lot 336 Phillips · 9 Nov Historic and important cultured pearl and diamond necklace, 1920s ×2.0 high estimate Estimate USD 153k – 220k USD 441,170 $343,130price paid Lot 76 Christie's · 10 Nov Van Cleef & Arpels pair of natural pearl and diamond 'Clochettes' earrings ×2.3 high estimate Estimate USD 97k – 146k USD 343,130 $110,292price paid Lot 347 Phillips · 9 Nov Natural pearl and diamond necklace, circa 1891 ×0.9 high estimate Estimate USD 85k – 122k USD 110,292 CHF 50k–80kestimate Lot 590 Sotheby's · Today 12:00 CET Unique mother-of-pearl, sapphire and diamond 'Paon' bangle CHF 50k–70kestimate Lot 876 Sotheby's · Closes 13 Nov 11:00 CET Pair of natural pearl and diamond pendent earrings CHF 50k–65kestimate Lot 617 Sotheby's · Today 12:00 CET Pair of natural pearl, pearl and diamond pendent earrings CHF 40k–60kestimate Lot 1033 Sotheby's · Today 17:00 CET Elegant pair of natural pearl and diamond pendant earrings $47,268price paid Lot 350 Phillips · 9 Nov Pair of natural pearl and diamond ear clips ×0.8 high estimate Estimate USD 43k – 61k USD 47,268 CHF 30k–50kestimate Lot 1032 Sotheby's · Today 17:00 CET Pair of natural pearl and diamond bracelets $46,790price paid Lot 66 Christie's · 10 Nov Van Cleef & Arpels pair of coloured cultured pearl and diamond earrings ×0.8 high estimate Estimate USD 39k – 61k USD 46,790 $74,865price paid Lot 37 Christie's · 10 Nov German gold and mother-of-pearl snuff-box, berlin or dresden, circa 1750 ×1.2 high estimate Estimate USD 39k – 61k USD 74,865 CHF 30k–50kestimate Lot 776 Sotheby's · Closes 13 Nov 11:00 CET Conch pearl and diamond demi-parure CHF 26k–42kestimate Lot 527 Sotheby's · Today 12:00 CET Pair of silver, gold, seed pearl and diamond earclips CHF 20k–40kestimate Lot 1031 Sotheby's · Today 17:00 CET Pair of natural pearl and diamond pendent earclips CHF 24k–40kestimate Lot 749 Christie's · Closes 18 Nov 12:00 CET Suite of cultured pearl and diamond jewellery CHF 24k–40kestimate Lot 822 Christie's · Closes 18 Nov 12:00 CET Cultured pearl and diamond necklace $124,774price paid Lot 15 Christie's · 10 Nov Chopard pair of conch pearl, coloured diamond and diamond earrings ×2.6 high estimate Estimate USD 30k – 49k USD 124,774 $85,782price paid Lot 26 Christie's · 10 Nov Black starr & frost Art Deco mother-of-pearl, diamond, seed pearl and enamel cigarette case ×2.3 high estimate Estimate USD 24k – 37k USD 85,782 CHF 20k–28kestimate Lot 688 Sotheby's · Closes 13 Nov 11:00 CET Natural pearl, emerald and diamond brooch CHF 17k–26kestimate Lot 857 Sotheby's · Closes 13 Nov 11:00 CET Antique gold, natural pearl, pearl and diamond bracelet CHF 17k–26kestimate Lot 874 Sotheby's · Closes 13 Nov 11:00 CET Natural pearl and diamond necklace CHF 15k–25kestimate Lot 832 Christie's · Closes 18 Nov 12:00 CET Natural pearl and diamond ring $49,910price paid Lot 5 Christie's · 10 Nov Bulgari pair of cultured pearl, ruby and emerald bangles ×1.6 high estimate Estimate USD 19k – 30k USD 49,910 $74,865price paid Lot 581 Christie's · 10 Nov JAR pair of mabé pearl, coral and diamond earrings ×2.5 high estimate Estimate USD 24k – 30k USD 74,865 CHF 18k–25kestimate Lot 736 Sotheby's · Closes 13 Nov 11:00 CET Gold, mother-of-pearl and diamond 'Kelly' wristwatch CHF 18k–24kestimate Lot 754 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels group of turquoise and mother-of-pearl jewellery CHF 12k–18kestimate Lot 204 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels cultured pearl and diamond sautoir CHF 12k–18kestimate Lot 617 Phillips · 12 Nov Cultured pearl and diamond demi-parure CHF 12k–18kestimate Lot 352 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels mother-of-pearl, diamond and enamel 'Lady arpels 4 saisons opéra' wristwatch CHF 13k–17kestimate Lot 853 Sotheby's · Closes 13 Nov 11:00 CET Pair of natural pearl and diamond earclips CHF 12k–16kestimate Lot 581 Phillips · 12 Nov Natural pearl and diamond necklace CHF 10k–15kestimate Lot 814 Christie's · Closes 18 Nov 12:00 CET Mid-20th century coloured natural pearl and diamond ring CHF 9k–13kestimate Lot 1020 Sotheby's · Today 17:00 CET Natural pearl and diamond pendant CHF 8k–12kestimate Lot 305 Christie's · Closes 17 Nov 12:00 CET Cultured pearl and diamond necklace CHF 8k–12kestimate Lot 350 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels mother-of-pearl, enamel and diamond 'Une journee a paris' wristwatch CHF 8k–12kestimate Lot 731 Sotheby's · Closes 13 Nov 11:00 CET Mother-of-pearl and diamond 'Rose de noel' brooch/pendant and a pair of 'Nerval' earrings CHF 10k–12kestimate Lot 732 Sotheby's · Closes 13 Nov 11:00 CET Mother-of-pearl 'Magic alhambra' sautoir Lot 345 Phillips · 9 Nov Horn and pearl hair comb, circa 1900 Estimate USD 8k – 12k Not sold CHF 7k–10kestimate Lot 664 Sotheby's · Closes 13 Nov 11:00 CET Gold and cultured pearl brooch CHF 7k–10kestimate Lot 923 Sotheby's · Closes 13 Nov 11:00 CET Cultured pearl and diamond necklace CHF 7k–10kestimate Lot 508 Sotheby's · Today 12:00 CET Pair of pearl and diamond cufflinks CHF 5k–8kestimate Lot 875 Sotheby's · Closes 13 Nov 11:00 CET Natural pearl and diamond pendant CHF 5k–8kestimate Lot 578 Phillips · 12 Nov Cultured pearl and diamond necklace CHF 5k–7kestimate Lot 769 Christie's · Closes 18 Nov 12:00 CET M. gérard cultured pearl and diamond necklace CHF 5k–7kestimate Lot 961 Sotheby's · Closes 13 Nov 11:00 CET Gold, cultured pearl and ruby brooch CHF 4k–6kestimate Lot 226 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of cultured pearl and ruby earrings CHF 4k–6kestimate Lot 592 Phillips · 12 Nov Cultured pearl and diamond necklace CHF 4k–6kestimate Lot 258 Christie's · Closes 17 Nov 12:00 CET Chopard mother-of-pearl, coloured diamond and diamond 'La strada' wristwatch CHF 4k–6kestimate Lot 280 Christie's · Closes 17 Nov 12:00 CET Swedish gold-mounted mother-of-pearl étui set with a miniature, circa 1790 CHF 4k–6kestimate Lot 517 Phillips · 12 Nov Cultured pearl, emerald and gold demi-parure CHF 4k–5kestimate Lot 247 Christie's · Closes 17 Nov 12:00 CET de Grisogono group of coloured cultured pearl, coloured diamond and diamond jewellery CHF 3k–5kestimate Lot 613 Phillips · 12 Nov Pair of mother-of-pearl, tourmaline and diamond ear clips CHF 2k–4kestimate Lot 326 Christie's · Closes 17 Nov 12:00 CET Set of cultured pearl, topaz and amethyst jewellery CHF 2k–4kestimate Lot 341 Christie's · Closes 17 Nov 12:00 CET Pair of cultured pearl and diamond earrings CHF 2k–4kestimate Lot 207 Christie's · Closes 17 Nov 12:00 CET Trianon pair of lemonwood, turquoise and pearl earrings CHF 2k–4kestimate Lot 259 Christie's · Closes 17 Nov 12:00 CET Chopard mother-of-pearl, diamond and coloured sapphire 'Imperiale' wristwatch CHF 2k–3kestimate Lot 1065 Sotheby's · Today 17:00 CET Belle epoque seed pearl and diamond necklace CHF 2k–3kestimate Lot 516 Phillips · 12 Nov Set of three cultured pearl, gem-set and gold necklaces CHF 2k–2kestimate Lot 218 Christie's · Closes 17 Nov 12:00 CET Coloured cultured pearl and diamond necklace CHF 2k–2kestimate Lot 266 Christie's · Closes 17 Nov 12:00 CET Cultured pearl and diamond necklace CHF 2k–2kestimate Lot 327 Christie's · Closes 17 Nov 12:00 CET Nikos koulis pair of coloured cultured pearl and diamonds earrings CHF 2k–2kestimate Lot 770 Christie's · Closes 18 Nov 12:00 CET Poiray cultured pearl and ruby bracelet CHF 1k–2kestimate Lot 219 Christie's · Closes 17 Nov 12:00 CET Cultured pearl, diamond and sapphire necklace CHF 1k–2kestimate Lot 323 Christie's · Closes 17 Nov 12:00 CET Cultured pearl and diamond ring

CHF 1.70m–2.50mestimateabout $888k per carat Lot 643 Sotheby's · Today 12:00 CET Stunning fancy deep blue diamond and diamond ring 2.88 ct · Fancy Deep Blue · VS2 $613,616per carat Lot 613 Christie's · 10 Nov 'The Bulgari pink' extraordinary Bulgari coloured diamond and diamond ring 24.00 ct · Fancy Intense Pink · VVS2 ×0.8 high estimate Estimate USD 12.2m – 18.3m USD 14,726,791$613,616 per carat $325,498per carat Lot 610 Christie's · 10 Nov Coloured diamond and diamond ring, mounted by Harry Winston 2.30 ct · Fancy Blue · SI1 ×1.5 high estimate Estimate USD 305k – 512k USD 748,646$325,498 per carat $111,939per carat Lot 104 Christie's · 10 Nov Rare david morris coloured diamond and diamond ring 14.63 ct · Fancy Orangy Pink · VVS1 ×0.6 high estimate Estimate USD 1.58m – 2.56m USD 1,637,664$111,939 per carat $83,125per carat Lot 526 Christie's · 10 Nov Diamond bracelet, monture Cartier 7.13 ct · E colour ×0.8 high estimate Estimate USD 487k – 731k USD 592,678$83,125 per carat $70,346per carat Lot 546 Christie's · 10 Nov Exceptional Harry Winston diamond ring 15.52 ct · D colour · VVS2 ×0.7 high estimate Estimate USD 853k – 1.46m USD 1,091,776$70,346 per carat $59,654per carat Lot 109 Christie's · 10 Nov Important Bulgari ruby and diamond 'Trombino' ring 14.38 ct · Burma · No heat ×0.7 high estimate Estimate USD 731k – 1.22m USD 857,824$59,654 per carat $63,686per carat Lot 111 Christie's · 10 Nov Graff diamond necklace 12.49 ct · VVS2 ×0.8 high estimate Estimate USD 609k – 975k USD 795,437$63,686 per carat CHF 350k–500kestimateabout $57k per carat Lot 579 Sotheby's · Today 12:00 CET Diamond ring 9.01 ct · D · VVS1 $46,740per carat Lot 611 Christie's · 10 Nov 'The star of sierra leone vi' Harry Winston diamond ring 21.69 ct · D colour · VVS2 ×0.7 high estimate Estimate USD 975k – 1.46m USD 1,013,792$46,740 per carat $42,865per carat Lot 110 Christie's · 10 Nov Mauboussin diamond ring 10.37 ct · D colour · VVS1 ×0.7 high estimate Estimate USD 390k – 609k USD 444,509$42,865 per carat $42,993per carat Lot 597 Christie's · 10 Nov Harry Winston diamond ring 13.06 ct · D colour · VS2 ×0.9 high estimate Estimate USD 426k – 609k USD 561,485$42,993 per carat $45,086per carat Lot 103 Christie's · 10 Nov Graff diamond and coloured diamond 'En tremblant' flower brooch 11.07 ct · F colour · VS1 ×1.0 high estimate Estimate USD 305k – 487k USD 499,098$45,086 per carat $41,159per carat Lot 114 Christie's · 10 Nov David morris emerald and diamond ring 17.81 ct · Colombia ×1.2 high estimate Estimate USD 390k – 609k USD 733,050$41,159 per carat CHF 120k–200kestimateabout $28k per carat Lot 575 Sotheby's · Today 12:00 CET Ruby and diamond ring 7.00 ct · Burma · No heat CHF 120k–170kestimateabout $25k per carat Lot 639 Sotheby's · Today 12:00 CET Emerald and diamond ring 7.04 ct · Colombia · Minor oil $23,349per carat Lot 565 Christie's · 10 Nov Graff diamond ring 5.01 ct · E colour · VS1 ×0.8 high estimate Estimate USD 104k – 146k USD 116,976$23,349 per carat CHF 60k–75kestimateabout $24k per carat Lot 970 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 3.46 ct $34,082per carat Lot 19 Christie's · 10 Nov Sapphire and diamond ring, monture Boucheron 17.39 ct · Burma · No heat ×1.2 high estimate Estimate USD 305k – 487k USD 592,678$34,082 per carat CHF 130k–170kestimateabout $22k per carat Lot 570 Sotheby's · Today 12:00 CET Diamond ring 8.19 ct · G · VVS1 $21,749per carat Lot 561 Christie's · 10 Nov Tiffany & Co. Jean Schlumberger sapphire and diamond 'Bees' ring 12.55 ct · Ceylon · No heat ×0.9 high estimate Estimate USD 195k – 305k USD 272,944$21,749 per carat $22,123per carat Lot 550 Christie's · 10 Nov Diamond ring, monture Cartier 7.05 ct · F colour · VVS2 ×0.9 high estimate Estimate USD 110k – 171k USD 155,968$22,123 per carat Lot 68 Christie's · 10 Nov Graff coloured diamond and diamond 'Large bulls eye' necklace 10.35 ct · Fancy Light Yellow · VS2 Estimate USD 146k – 244k Not sold $19,176per carat Lot 603 Christie's · 10 Nov Cartier Art Deco emerald and diamond ring 6.10 ct · Colombia · Minor oil ×0.9 high estimate Estimate USD 91k – 134k USD 116,976$19,176 per carat CHF 70k–85kestimateabout $18k per carat Lot 551 Sotheby's · Today 12:00 CET Diamond ring 5.30 ct · G · VS1 $24,016per carat Lot 86 Christie's · 10 Nov David morris emerald and diamond ring 22.73 ct · Colombia ×1.1 high estimate Estimate USD 305k – 487k USD 545,888$24,016 per carat $21,513per carat Lot 77 Christie's · 10 Nov Van Cleef & Arpels diamond and coloured diamond ring 2.32 ct ×1.0 high estimate Estimate USD 30k – 49k USD 49,910$21,513 per carat $16,445per carat Lot 105 Christie's · 10 Nov de Grisogono diamond and emerald ring 9.01 ct · E colour · SI1 ×0.8 high estimate Estimate USD 122k – 183k USD 148,170$16,445 per carat CHF 65k–85kestimateabout $17k per carat Lot 863 Christie's · Closes 18 Nov 12:00 CET Cartier diamond ring 5.42 ct · D colour · VS1 $15,886per carat Lot 12 Christie's · 10 Nov Sabbadini diamond ring 5.40 ct · G colour · VVS1 ×0.9 high estimate Estimate USD 73k – 97k USD 85,782$15,886 per carat $12,354per carat Lot 78 Christie's · 10 Nov Van Cleef & Arpels coloured diamond and diamond ring 2.02 ct ×0.7 high estimate Estimate USD 24k – 37k USD 24,955$12,354 per carat CHF 240k–300kestimateabout $15k per carat Lot 571 Sotheby's · Today 12:00 CET Fine sapphire and diamond ring 22.28 ct · Ceylon · No heat $23,183per carat Lot 596 Christie's · 10 Nov Cartier sapphire and diamond ring 12.11 ct · Burma · No heat ×1.4 high estimate Estimate USD 122k – 207k USD 280,742$23,183 per carat $44,704per carat Lot 33 Christie's · 10 Nov Fred emerald and diamond ring 6.28 ct · Colombia · Minor oil ×2.9 high estimate Estimate USD 73k – 97k USD 280,742$44,704 per carat $17,046per carat Lot 101 Christie's · 10 Nov Chopard coloured diamond and diamond ring 20.13 ct · Fancy Intense Yellow · VS2 ×1.1 high estimate Estimate USD 195k – 305k USD 343,130$17,046 per carat CHF 20k–30kestimateabout $12k per carat Lot 707 Christie's · Closes 18 Nov 12:00 CET Tiffany & Co., schlumberger diamond flower brooch 2.51 ct · J colour · VS2 CHF 85k–160kestimateabout $12k per carat Lot 607 Sotheby's · Today 12:00 CET Sapphire and diamond ring 12.36 ct · Ceylon · No heat Lot 8 Christie's · 10 Nov Van Cleef & Arpels sapphire and diamond ring 5.55 ct · Not determinable · Heated Estimate USD 49k – 85k Not sold CHF 170k–280kestimateabout $12k per carat Lot 578 Sotheby's · Today 12:00 CET Emerald and diamond ring 22.86 ct · Colombia · Minor oil CHF 24k–45kestimateabout $12k per carat Lot 833 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels emerald and diamond ring 3.59 ct · Colombia · No oil CHF 580k–750kestimateabout $12k per carat Lot 603 Sotheby's · Today 12:00 CET Striking and impressive sapphire and diamond ring 69.44 ct · Ceylon · No heat CHF 320k–480kestimateabout $11k per carat Lot 1053 Sotheby's · Today 17:00 CET Important sapphire, cultured pearl, mother-of-pearl and diamond necklace 43.07 ct · Ceylon · No heat $11,714per carat Lot 609 Christie's · 10 Nov Van Cleef & Arpels mid-20th century sapphire and diamond clip-brooch 43.94 ct · Ceylon · No heat ×0.8 high estimate Estimate USD 366k – 609k USD 514,694$11,714 per carat CHF 55k–75kestimateabout $10k per carat Lot 738 Sotheby's · Closes 13 Nov 11:00 CET Fancy light yellow diamond and coloured diamond ring 8.07 ct CHF 13k–22kestimateabout $9k per carat Lot 890 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Trombino' ring 2.42 ct CHF 70k–100kestimateabout $8k per carat Lot 831 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 12.28 ct CHF 30k–50kestimateabout $8k per carat Lot 826 Christie's · Closes 18 Nov 12:00 CET Ruby and diamond ring, monture Cartier 5.86 ct · Burma · No heat CHF 45k–60kestimateabout $8k per carat Lot 1051 Sotheby's · Today 17:00 CET Fine emerald and diamond ring 7.89 ct · Colombia · Minor oil CHF 850k–1.70mestimateabout $8k per carat Lot 1080 Sotheby's · Today 17:00 CET Highly impressive and historically significant sapphire, rock crystal and diamond bracelet 197.80 ct · Ceylon · No heat $6,340per carat Lot 590 Christie's · 10 Nov Bulgari ruby and diamond ring 13.53 ct · Not determinable · Heated ×0.7 high estimate Estimate USD 79k – 122k USD 85,782$6,340 per carat $24,757per carat Lot 107 Christie's · 10 Nov Graff sapphire and diamond ring 27.09 ct · Burma · No heat ×2.8 high estimate Estimate USD 146k – 244k USD 670,662$24,757 per carat CHF 65k–85kestimateabout $7k per carat Lot 541 Sotheby's · Today 12:00 CET Sapphire and diamond ring 12.89 ct $25,604per carat Lot 34 Christie's · 10 Nov Boucheron sapphire and diamond ring 7.31 ct · Ceylon ×3.1 high estimate Estimate USD 39k – 61k USD 187,162$25,604 per carat CHF 40k–60kestimateabout $7k per carat Lot 608 Sotheby's · Today 12:00 CET Emerald and diamond ring 9.31 ct · Colombia · Moderate oil CHF 15k–25kestimateabout $6k per carat Lot 722 Christie's · Closes 18 Nov 12:00 CET Emerald and diamond ring, monture Harry Winston 3.75 ct · Colombia · Minor oil CHF 50k–70kestimateabout $6k per carat Lot 752 Christie's · Closes 18 Nov 12:00 CET de Grisogono sapphire and emerald ring 11.30 ct CHF 10k–15kestimateabout $4k per carat Lot 1027 Sotheby's · Today 17:00 CET Art Deco diamond ring 3.48 ct CHF 13k–22kestimateabout $4k per carat Lot 818 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring 5.05 ct CHF 60k–80kestimateabout $4k per carat Lot 929 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond ring 21.73 ct CHF 12k–17kestimateabout $2k per carat Lot 956 Sotheby's · Closes 13 Nov 11:00 CET Yellow sapphire and diamond 'Two bees' ring 10.08 ct CHF 35k–45kestimateabout $2k per carat Lot 658 Sotheby's · Closes 13 Nov 11:00 CET Sapphire ring 28.97 ct CHF 40k–70kestimateabout $865 per carat Lot 1047 Sotheby's · Today 17:00 CET Emerald and diamond necklace 77.51 ct · Colombia · Moderate oil CHF 40k–60kestimateabout $584 per carat Lot 564 Sotheby's · Today 12:00 CET Aquamarine and diamond pendent necklace 104.38 ct CHF 17k–26kestimateabout $186 per carat Lot 882 Sotheby's · Closes 13 Nov 11:00 CET Aquamarine, ruby and diamond 'Bird on a rock' brooch 140.62 ct $1,029,389price paid Lot 106 Christie's · 10 Nov Important pair of Graff emerald and diamond earrings Colombia · Minor oil ×0.7 high estimate Estimate USD 914k – 1.46m USD 1,029,389 CHF 780k–1.10mestimate Lot 1082 Sotheby's · Today 17:00 CET Superb Art Deco black opal and diamond tiara/necklace-brooch combination $1,341,325price paid Lot 108 Christie's · 10 Nov Impressive pair of Graff emerald and diamond earrings Colombia · Minor oil ×1.4 high estimate Estimate USD 609k – 975k USD 1,341,325 $1,497,293price paid Lot 123 Christie's · 10 Nov Magnificent Van Cleef & Arpels ruby and diamond 'Oiseau mystérieux' mystery-set brooch ×1.5 high estimate Estimate USD 609k – 975k USD 1,497,293 $623,872price paid Lot 18 Christie's · 10 Nov Important pair of Van Cleef & Arpels sapphire and diamond earrings Ceylon · No heat ×0.6 high estimate Estimate USD 609k – 975k USD 623,872 CHF 330k–650kestimate Lot 622 Sotheby's · Today 12:00 CET Sapphire, emerald and diamond feather $733,050price paid Lot 87 Christie's · 10 Nov Important pair of david morris emerald and diamond earrings Colombia ×0.9 high estimate Estimate USD 487k – 792k USD 733,050 $499,098price paid Lot 608 Christie's · 10 Nov Van Cleef & Arpels Art Deco ruby and diamond bracelet ×0.7 high estimate Estimate USD 487k – 731k USD 499,098 CHF 350k–500kestimate Lot 637 Sotheby's · Today 12:00 CET Elegant pair of diamond pendent earrings D · VVS2 CHF 300k–500kestimate Lot 1072 Sotheby's · Today 17:00 CET Exquisite and historically important diamond tiara $1,294,534price paid Lot 545 Christie's · 10 Nov Impressive Van Cleef & Arpels set of mid-20th century ruby, emerald, sapphire and diamond 'Zip' jewellery ×2.1 high estimate Estimate USD 426k – 609k USD 1,294,534 $935,808price paid Lot 527 Christie's · 10 Nov Rare Van Cleef & Arpels sapphire, emerald, ruby and diamond necklace, with associated pair of earrings and ring ×1.5 high estimate Estimate USD 366k – 609k USD 935,808 $701,856price paid Lot 122 Christie's · 10 Nov Van Cleef & Arpels ruby and diamond 'Fuchsia' mystery-set clip-brooch ×1.2 high estimate Estimate USD 390k – 609k USD 701,856 CHF 260k–420kestimate Lot 625 Sotheby's · Today 12:00 CET Superb Art Deco sapphire and diamond double clip-brooch $896,816price paid Lot 555 Christie's · 10 Nov Mellerio dits meller set of late 19th century sapphire and diamond jewellery ×1.8 high estimate Estimate USD 305k – 512k USD 896,816 $811,034price paid Lot 84 Christie's · 10 Nov Van Cleef & Arpels pair of ruby and diamond 'Cadix' mystery-set earrings ×1.7 high estimate Estimate USD 305k – 487k USD 811,034 $249,549price paid Lot 536 Christie's · 10 Nov Bhagat pair of diamond bangles ×0.6 high estimate Estimate USD 207k – 390k USD 249,549 CHF 200k–300kestimate Lot 1034 Sotheby's · Today 17:00 CET Emerald and diamond necklace $561,485price paid Lot 544 Christie's · 10 Nov Van Cleef & Arpels mid-20th century sapphire and diamond 'Genre ancien' necklace ×1.5 high estimate Estimate USD 244k – 366k USD 561,485 $561,485price paid Lot 119 Christie's · 10 Nov Van Cleef & Arpels diamond and coloured diamond transformable 'Louvre' necklace ×1.5 high estimate Estimate USD 244k – 366k USD 561,485 CHF 180k–280kestimate Lot 552 Sotheby's · Today 12:00 CET Emerald, turquoise and diamond necklace CHF 190k–280kestimate Lot 537 Sotheby's · Today 12:00 CET Sapphire and diamond demi-parure CHF 220k–280kestimate Lot 641 Sotheby's · Today 12:00 CET Highly important egyptian revival gem-set and diamond bracelet CHF 160k–260kestimate Lot 630 Sotheby's · Today 12:00 CET Elegant pair of natural pearl and diamond pendent earclips CHF 150k–250kestimate Lot 600 Sotheby's · Today 12:00 CET Iconic emerald, onyx, coloured diamond and diamond 'Tiger' pendant CHF 150k–250kestimate Lot 634 Sotheby's · Today 12:00 CET Iconic and elegant tanzanite, moonstone, aquamarine, onyx and diamond 'Tutti Frutti' bracelet $265,146price paid Lot 113 Christie's · 10 Nov David morris diamond and coloured diamond 'Anemone' ring D colour · VS2 ×0.9 high estimate Estimate USD 195k – 305k USD 265,146 $249,549price paid Lot 99 Christie's · 10 Nov Graff coloured diamond bracelet ×0.8 high estimate Estimate USD 195k – 305k USD 249,549 $202,758price paid Lot 10 Christie's · 10 Nov Mauboussin set of diamond, sapphire and coloured sapphire 'Papillon' jewellery ×0.7 high estimate Estimate USD 195k – 305k USD 202,758 $467,904price paid Lot 121 Christie's · 10 Nov Van Cleef & Arpels sapphire and diamond 'Pivoine' mystery-set clip-brooch ×1.5 high estimate Estimate USD 195k – 305k USD 467,904 $233,952price paid Lot 533 Christie's · 10 Nov Van Cleef & Arpels retro turquoise, ruby and diamond 'Ballerina' brooch ×0.8 high estimate Estimate USD 183k – 305k USD 233,952 CHF 150k–200kestimate Lot 629 Sotheby's · Today 12:00 CET Elegant pair of emerald and diamond pendent earrings $265,146price paid Lot 572 Christie's · 10 Nov Bulgari diamond 'Serpenti' necklace ×1.1 high estimate Estimate USD 195k – 244k USD 265,146 Lot 534 Christie's · 10 Nov Bulgari enamel and diamond 'Serpenti' bracelet-watch Estimate USD 146k – 244k Not sold CHF 130k–200kestimate Lot 572 Sotheby's · Today 12:00 CET Impressive sapphire and diamond necklace CHF 130k–200kestimate Lot 598 Sotheby's · Today 12:00 CET Unique ancient coin, Paraíba tourmaline and diamond 'Monete' watch-sautoir CHF 130k–200kestimate Lot 613 Sotheby's · Today 12:00 CET Gold, ruby and diamond 'Serpenti' bangle $483,501price paid Lot 117 Christie's · 10 Nov Magnificent Cartier Art Deco multi-gem and lacquer ink pen case ×2.0 high estimate Estimate USD 146k – 244k USD 483,501 $249,549price paid Lot 3 Christie's · 10 Nov Cartier diamond, onyx and emerald 'Tigre' clip-brooch ×1.0 high estimate Estimate USD 146k – 244k USD 249,549 $187,162price paid Lot 552 Christie's · 10 Nov Cartier Belle Époque diamond necklace ×0.8 high estimate Estimate USD 158k – 244k USD 187,162 $343,130price paid Lot 98 Christie's · 10 Nov Chopard pair of coloured diamond earrings Fancy Yellow · VVS1 ×1.4 high estimate Estimate USD 146k – 244k USD 343,130 Lot 543 Christie's · 10 Nov Van Cleef & Arpels mid-20th century diamond 'Ludo' bracelet Estimate USD 171k – 244k Not sold CHF 100k–200kestimate Lot 594 Sotheby's · Today 12:00 CET Diamond necklace/bracelet combination $249,549price paid Lot 547 Christie's · 10 Nov Cartier multi-gem 'Panthère' brooch ×1.1 high estimate Estimate USD 158k – 219k USD 249,549 $265,146price paid Lot 602 Christie's · 10 Nov Chaumet pair of Art Deco diamond bracelets ×1.2 high estimate Estimate USD 146k – 219k USD 265,146 $280,742price paid Lot 542 Christie's · 10 Nov Van Cleef & Arpels set of mid-20th century sapphire and diamond 'Campanule' mystery-set jewellery ×1.3 high estimate Estimate USD 146k – 219k USD 280,742 CHF 85k–170kestimate Lot 602 Sotheby's · Today 12:00 CET Emerald and diamond bracelet CHF 85k–160kestimate Lot 585 Sotheby's · Today 12:00 CET Pair of emerald and diamond earclips $140,371price paid Lot 502 Christie's · 10 Nov Rare Bulgari set of retro sapphire and diamond jewellery ×0.8 high estimate Estimate USD 122k – 183k USD 140,371 CHF 80k–150kestimate Lot 612 Sotheby's · Today 12:00 CET Diamond ring D · SI1 $218,355price paid Lot 595 Christie's · 10 Nov Cartier sapphire and diamond bracelet ×1.2 high estimate Estimate USD 122k – 183k USD 218,355 $155,968price paid Lot 600 Christie's · 10 Nov Cartier Art Deco emerald and diamond flower brooch Colombia · Minor oil ×0.9 high estimate Estimate USD 122k – 183k USD 155,968 $249,549price paid Lot 579 Christie's · 10 Nov JAR coral, chalcedony and diamond bangle ×1.4 high estimate Estimate USD 122k – 183k USD 249,549 $187,162price paid Lot 83 Christie's · 10 Nov Van Cleef & Arpels sapphire and diamond 'Pivoine' mystery-set clip-brooch ×1.0 high estimate Estimate USD 122k – 183k USD 187,162 $171,565price paid Lot 585 Christie's · 10 Nov JAR pair of topaz and diamond earrings ×1.0 high estimate Estimate USD 116k – 171k USD 171,565 $249,549price paid Lot 580 Christie's · 10 Nov JAR pair of multi-gem earrings ×1.6 high estimate Estimate USD 97k – 158k USD 249,549 $202,758price paid Lot 531 Christie's · 10 Nov Van Cleef & Arpels suite of emerald and diamond jewellery ×1.3 high estimate Estimate USD 110k – 158k USD 202,758 $202,758price paid Lot 604 Christie's · 10 Nov Boucheron Art Deco diamond and enamel bracelet ×1.4 high estimate Estimate USD 97k – 146k USD 202,758 CHF 70k–120kestimate Lot 1049 Sotheby's · Today 17:00 CET Important ruby and diamond bracelet $171,565price paid Lot 118 Christie's · 10 Nov Cartier Art Deco laque burgauté, coral, diamond and wood table cigarette case ×1.2 high estimate Estimate USD 97k – 146k USD 171,565 $124,774price paid Lot 573 Christie's · 10 Nov Cartier Art Deco ruby and diamond bracelet ×0.9 high estimate Estimate USD 85k – 146k USD 124,774 CHF 85k–120kestimate Lot 554 Sotheby's · Today 12:00 CET Impressive rock crystal and diamond sautoir CHF 85k–120kestimate Lot 561 Sotheby's · Today 12:00 CET Sapphire and diamond bracelet CHF 80k–120kestimate Lot 636 Sotheby's · Today 12:00 CET Tanzanite, moonstone, aquamarine, onyx and diamond 'Tutti Frutti' ring $109,178price paid Lot 30 Christie's · 10 Nov Graff diamond wristwatch ×0.7 high estimate Estimate USD 97k – 146k USD 109,178 CHF 90k–120kestimate Lot 685 Sotheby's · Closes 13 Nov 11:00 CET Diamond necklace $343,130price paid Lot 76 Christie's · 10 Nov Van Cleef & Arpels pair of natural pearl and diamond 'Clochettes' earrings ×2.3 high estimate Estimate USD 97k – 146k USD 343,130 $233,952price paid Lot 541 Christie's · 10 Nov Van Cleef & Arpels set of multi-gem jewellery ×1.6 high estimate Estimate USD 110k – 146k USD 233,952 $226,154price paid Lot 82 Christie's · 10 Nov Van Cleef & Arpels pair of ruby and diamond 'Venus' mystery-set earrings ×1.5 high estimate Estimate USD 97k – 146k USD 226,154 CHF 80k–120kestimate Lot 1044 Sotheby's · Today 17:00 CET Fine diamond 'Trévise' necklace $163,766price paid Lot 560 Christie's · 10 Nov Bulgari, lecoultre, enamel, diamond and ruby 'Serpenti' bracelet-watch ×1.2 high estimate Estimate USD 91k – 134k USD 163,766 $101,379price paid Lot 548 Christie's · 10 Nov Cartier coloured sapphire and diamond 'Jacinthe' ring ×0.8 high estimate Estimate USD 79k – 134k USD 101,379 CHF 70k–100kestimate Lot 1009 Sotheby's · Today 17:00 CET Gold, turquoise, onyx, emerald and diamond bangle $155,968price paid Lot 601 Christie's · 10 Nov Cartier Art Deco ruby and diamond bracelet ×1.3 high estimate Estimate USD 85k – 122k USD 155,968 CHF 60k–100kestimate Lot 548 Sotheby's · Today 12:00 CET Emerald, onyx and diamond 'Panthère' pendent necklace CHF 70k–100kestimate Lot 562 Sotheby's · Today 12:00 CET Diamond ring $132,573price paid Lot 514 Christie's · 10 Nov de Grisogono coloured diamond, diamond and ruby necklace ×1.1 high estimate Estimate USD 85k – 122k USD 132,573 CHF 80k–100kestimate Lot 640 Sotheby's · Today 12:00 CET Attractive Art Deco diamond bracelet CHF 70k–100kestimate Lot 814 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond necklace CHF 50k–100kestimate Lot 528 Sotheby's · Today 12:00 CET Pink spinel, white jade and enamel jabot brooch CHF 70k–100kestimate Lot 591 Sotheby's · Today 12:00 CET Special commission pair of emerald, pink sapphire and diamond earrings Colombia · Moderate oil CHF 70k–100kestimate Lot 1081 Sotheby's · Today 17:00 CET Stylish Art Deco pair of rock crystal and diamond 'éventail' clips $187,162price paid Lot 605 Christie's · 10 Nov Van Cleef & Arpels Art Deco sapphire and diamond bracelet ×1.5 high estimate Estimate USD 97k – 122k USD 187,162 CHF 70k–100kestimate Lot 597 Sotheby's · Today 12:00 CET Diamond 'Snowflake' necklace CHF 70k–100kestimate Lot 1041 Sotheby's · Today 17:00 CET Transformable gold, sapphire, yellow sapphire and ruby 'Passe-partout' set CHF 60k–85kestimate Lot 654 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond necklace $132,573price paid Lot 112 Christie's · 10 Nov Boucheron multi-gem 'Adam' necklace ×1.4 high estimate Estimate USD 79k – 97k USD 132,573 $311,936price paid Lot 115 Christie's · 10 Nov Cartier Art Deco multi-gem, laque burgauté and enamel table cigarette case ×3.2 high estimate Estimate USD 73k – 97k USD 311,936 $106,058price paid Lot 57 Christie's · 10 Nov Cartier sapphire and diamond ring Ceylon · No heat ×1.1 high estimate Estimate USD 73k – 97k USD 106,058 CHF 50k–80kestimate Lot 635 Sotheby's · Today 12:00 CET Pair of tanzanite, moonstone, aquamarine, onyx and diamond 'Tutti Frutti' earrings $101,379price paid Lot 511 Christie's · 10 Nov de Grisogono pair of emerald, coral and diamond earrings ×1.0 high estimate Estimate USD 73k – 97k USD 101,379 $116,976price paid Lot 67 Christie's · 10 Nov Graff pair of coloured diamond and diamond 'Gypsy' earrings ×1.2 high estimate Estimate USD 73k – 97k USD 116,976 $85,782price paid Lot 53 Christie's · 10 Nov Graff emerald ring Colombia ×0.9 high estimate Estimate USD 73k – 97k USD 85,782 CHF 50k–80kestimate Lot 590 Sotheby's · Today 12:00 CET Unique mother-of-pearl, sapphire and diamond 'Paon' bangle CHF 40k–80kestimate Lot 534 Sotheby's · Today 12:00 CET Gold, emerald and diamond vanity case CHF 50k–80kestimate Lot 535 Sotheby's · Today 12:00 CET Retro ruby, emerald and diamond brooch/pendent necklace CHF 50k–80kestimate Lot 560 Sotheby's · Today 12:00 CET Pair of diamond brooches CHF 50k–80kestimate Lot 536 Sotheby's · Today 12:00 CET Gem-set and diamond 'éléphant' pendant $124,774price paid Lot 540 Christie's · 10 Nov Van Cleef & Arpels set of mid-20th century turquoise, sapphire and diamond jewellery ×1.3 high estimate Estimate USD 73k – 97k USD 124,774 CHF 55k–80kestimate Lot 569 Sotheby's · Today 12:00 CET Mystery-set pair of sapphire and diamond earclips CHF 60k–80kestimate Lot 698 Sotheby's · Closes 13 Nov 11:00 CET Diamond bracelet CHF 55k–80kestimate Lot 813 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond 'Wrapped heart' brooch CHF 55k–75kestimate Lot 869 Sotheby's · Closes 13 Nov 11:00 CET Art Deco ruby, onyx and diamond brooch CHF 50k–70kestimate Lot 816 Christie's · Closes 18 Nov 12:00 CET Buccellati emerald and sapphire necklace CHF 50k–70kestimate Lot 1059 Sotheby's · Today 17:00 CET Diamond necklace $124,774price paid Lot 509 Christie's · 10 Nov de Grisogono multi-gem necklace ×1.5 high estimate Estimate USD 61k – 85k USD 124,774 CHF 50k–70kestimate Lot 887 Christie's · Closes 18 Nov 12:00 CET Graff ruby and diamond necklace $171,565price paid Lot 584 Christie's · 10 Nov JAR pair of diamond 'Rideaux' earrings ×2.0 high estimate Estimate USD 61k – 85k USD 171,565 CHF 50k–70kestimate Lot 540 Sotheby's · Today 12:00 CET Elegant retro ruby, sapphire and diamond 'Ballerina' brooch CHF 50k–70kestimate Lot 592 Sotheby's · Today 12:00 CET Sapphire, pink sapphire and diamond 'Shirine' bangle Lot 7 Christie's · 10 Nov Piaget suite of ruby and diamond jewellery Estimate USD 49k – 85k Not sold $140,371price paid Lot 566 Christie's · 10 Nov René Lalique Art Nouveau set of glass, emamel and diamond jewellery ×1.6 high estimate Estimate USD 61k – 85k USD 140,371 $171,565price paid Lot 81 Christie's · 10 Nov Van Cleef & Arpels pair of sapphire and diamond mystery-set earrings ×2.0 high estimate Estimate USD 61k – 85k USD 171,565 $132,573price paid Lot 65 Christie's · 10 Nov Van Cleef & Arpels pair of diamond and coloured diamond bangles ×1.6 high estimate Estimate USD 61k – 85k USD 132,573 $124,774price paid Lot 79 Christie's · 10 Nov Van Cleef & Arpels pair of sapphire and diamond mystery-set earrings ×1.5 high estimate Estimate USD 49k – 85k USD 124,774 CHF 50k–65kestimate Lot 711 Sotheby's · Closes 13 Nov 11:00 CET Diamond bangle CHF 42k–65kestimate Lot 521 Sotheby's · Today 12:00 CET Impressive turquoise, sapphire and diamond 'Talisman' brooch CHF 55k–65kestimate Lot 547 Sotheby's · Today 12:00 CET Pair of onyx, emerald and diamond 'Panthère' pendent earrings CHF 50k–65kestimate Lot 722 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond pendent earrings CHF 50k–65kestimate Lot 567 Sotheby's · Today 12:00 CET Diamond double clip-brooch CHF 42k–65kestimate Lot 584 Sotheby's · Today 12:00 CET Emerald and diamond 'Pelouse' bracelet CHF 40k–60kestimate Lot 701 Christie's · Closes 18 Nov 12:00 CET Boucheron retro multi-gem bracelet CHF 40k–60kestimate Lot 740 Christie's · Closes 18 Nov 12:00 CET Cartier diamond 'Draperie' necklace CHF 42k–60kestimate Lot 720 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Indes mysterieuses' necklace CHF 42k–60kestimate Lot 737 Sotheby's · Closes 13 Nov 11:00 CET Coloured diamond and diamond 'Panthère' pendant $65,507price paid Lot 510 Christie's · 10 Nov de Grisogono pair of coloured diamond and diamond earrings ×0.9 high estimate Estimate USD 49k – 73k USD 65,507 CHF 40k–60kestimate Lot 689 Sotheby's · Closes 13 Nov 11:00 CET Diamond bracelet/choker combination $101,379price paid Lot 102 Christie's · 10 Nov Graff pair of coloured diamond flower earrings Fancy Intense Yellow · VS1 ×1.4 high estimate Estimate USD 49k – 73k USD 101,379 $101,379price paid Lot 583 Christie's · 10 Nov JAR pair of sapphire, coloured sapphire and diamond earrings ×1.4 high estimate Estimate USD 49k – 73k USD 101,379 CHF 40k–60kestimate Lot 821 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond parure CHF 42k–60kestimate Lot 806 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond ring $116,976price paid Lot 75 Christie's · 10 Nov Van Cleef & Arpels pair of diamond 'Cascade' earrings ×1.6 high estimate Estimate USD 49k – 73k USD 116,976 $93,581price paid Lot 506 Christie's · 10 Nov Van Cleef & Arpels pair of mid-20th century diamond 'à cheval' earrings ×1.3 high estimate Estimate USD 49k – 73k USD 93,581 Lot 71 Christie's · 10 Nov Van Cleef & Arpels diamond brooch / pendant Estimate USD 49k – 73k Not sold CHF 40k–60kestimate Lot 1078 Sotheby's · Today 17:00 CET Antique ruby and diamond necklace CHF 32k–55kestimate Lot 862 Sotheby's · Closes 13 Nov 11:00 CET Egyptian revival gem-set, enamel and diamond pendent necklace CHF 38k–55kestimate Lot 532 Sotheby's · Today 12:00 CET Retro gold and diamond 'Col claudine' demi-parure CHF 35k–55kestimate Lot 529 Sotheby's · Today 12:00 CET Gold and sapphire 'Melone' evening bag CHF 30k–55kestimate Lot 523 Sotheby's · Today 12:00 CET Charming egyptian revival diamond brooch CHF 35k–55kestimate Lot 785 Sotheby's · Closes 13 Nov 11:00 CET Coloured sapphire and coloured diamond necklace CHF 35k–55kestimate Lot 936 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond parure CHF 30k–50kestimate Lot 727 Christie's · Closes 18 Nov 12:00 CET Boucheron late 19th century diamond and pearl necklace/tiara CHF 35k–50kestimate Lot 621 Sotheby's · Today 12:00 CET Diamond tiara CHF 34k–50kestimate Lot 669 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond brooch $163,766price paid Lot 116 Christie's · 10 Nov Cartier Art Deco multi-gem, laque burgauté and enamel vanity case ×2.7 high estimate Estimate USD 39k – 61k USD 163,766 $77,984price paid Lot 92 Christie's · 10 Nov Cartier Art Deco aventurine, coral, mother-of-pearl, diamond and enamel case ×1.3 high estimate Estimate USD 39k – 61k USD 77,984 CHF 35k–50kestimate Lot 860 Christie's · Closes 18 Nov 12:00 CET Cartier diamond necklace CHF 30k–50kestimate Lot 655 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and diamond earclips CHF 30k–50kestimate Lot 776 Sotheby's · Closes 13 Nov 11:00 CET Conch pearl and diamond demi-parure $54,589price paid Lot 54 Christie's · 10 Nov de Grisogono pair of emerald, coloured diamond and diamond earrings ×0.9 high estimate Estimate USD 39k – 61k USD 54,589 CHF 30k–50kestimate Lot 783 Christie's · Closes 18 Nov 12:00 CET de Grisogono coloured diamond and diamond choker CHF 30k–50kestimate Lot 849 Christie's · Closes 18 Nov 12:00 CET de Grisogono pair of garnet, diamond and coloured diamond earrings CHF 30k–50kestimate Lot 553 Sotheby's · Today 12:00 CET Pair of emerald, tourmaline and diamond pendent earrings $59,268price paid Lot 56 Christie's · 10 Nov Graff pair of diamond 'Concentric circle' earrings I colour · VS2 ×1.0 high estimate Estimate USD 39k – 61k USD 59,268 $59,268price paid Lot 100 Christie's · 10 Nov Graff pair of coloured diamond flower earrings ×1.0 high estimate Estimate USD 39k – 61k USD 59,268 CHF 34k–50kestimate Lot 721 Sotheby's · Closes 13 Nov 11:00 CET Diamond pendent necklace CHF 34k–50kestimate Lot 815 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond bracelet CHF 34k–50kestimate Lot 816 Sotheby's · Closes 13 Nov 11:00 CET Pair of ruby and diamond pendent earrings $101,379price paid Lot 582 Christie's · 10 Nov JAR pair of multi-gem clip-brooches ×1.7 high estimate Estimate USD 37k – 61k USD 101,379 CHF 30k–50kestimate Lot 593 Sotheby's · Today 12:00 CET Pair of sapphire, pink sapphire and diamond 'Shirine' pendent earrings CHF 40k–50kestimate Lot 781 Christie's · Closes 18 Nov 12:00 CET Michele della valle ruby flower clip-brooch $81,103price paid Lot 508 Christie's · 10 Nov Van Cleef & Arpels mid-20th century diamond 'à cheval' bracelet ×1.3 high estimate Estimate USD 37k – 61k USD 81,103 $74,865price paid Lot 80 Christie's · 10 Nov Van Cleef & Arpels ruby and diamond 'Nouveau lampion' mystery-set ring ×1.2 high estimate Estimate USD 49k – 61k USD 74,865 $46,790price paid Lot 66 Christie's · 10 Nov Van Cleef & Arpels pair of coloured cultured pearl and diamond earrings ×0.8 high estimate Estimate USD 39k – 61k USD 46,790 CHF 30k–50kestimate Lot 733 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels mid-20th century aquamarine and ruby clip-brooch with an associated pair of earrings CHF 30k–50kestimate Lot 596 Sotheby's · Today 12:00 CET Pair of coloured diamond and diamond 'Jamaïque' earclips CHF 32k–50kestimate Lot 673 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and diamond pendent earclips CHF 32k–48kestimate Lot 1048 Sotheby's · Today 17:00 CET Pair of ruby and diamond earclips CHF 25k–45kestimate Lot 705 Christie's · Closes 18 Nov 12:00 CET Bulgari onyx, sapphire and diamond necklace CHF 36k–45kestimate Lot 714 Christie's · Closes 18 Nov 12:00 CET Bulgari multi-gem clip-brooch Ceylon · Heated CHF 24k–45kestimate Lot 652 Sotheby's · Closes 13 Nov 11:00 CET Turquoise and diamond necklace CHF 30k–45kestimate Lot 797 Sotheby's · Closes 13 Nov 11:00 CET Pair of onyx and diamond 'Panthère créole' earclips CHF 25k–45kestimate Lot 844 Christie's · Closes 18 Nov 12:00 CET David Webb jade, ruby and sapphire sautoir CHF 26k–45kestimate Lot 716 Sotheby's · Closes 13 Nov 11:00 CET Chalcedony and diamond 'Campanule' demi-parure CHF 26k–42kestimate Lot 788 Sotheby's · Closes 13 Nov 11:00 CET Onyx and diamond 'Serpenti viper' bangle CHF 26k–42kestimate Lot 522 Sotheby's · Today 12:00 CET Egyptian revival rock crystal, onyx and diamond jabot brooch CHF 26k–42kestimate Lot 765 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond 'Crocodile' ring CHF 26k–42kestimate Lot 796 Sotheby's · Closes 13 Nov 11:00 CET Gold, lacquer, emerald and onyx 'Kublai panthère' cuff-bracelet CHF 26k–42kestimate Lot 839 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond pendent earrings CHF 26k–42kestimate Lot 527 Sotheby's · Today 12:00 CET Pair of silver, gold, seed pearl and diamond earclips CHF 26k–42kestimate Lot 885 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond necklace CHF 26k–42kestimate Lot 714 Sotheby's · Closes 13 Nov 11:00 CET Tanzanite and diamond 'Les JARdins' demi-parure $77,984price paid Lot 9 Christie's · 10 Nov Boucheron set of multi-gem jewellery ×1.6 high estimate Estimate USD 30k – 49k USD 77,984 $62,387price paid Lot 17 Christie's · 10 Nov Boucheron pair of diamond 'Cinna pampilles' earrings ×1.3 high estimate Estimate USD 30k – 49k USD 62,387 CHF 24k–40kestimate Lot 1052 Sotheby's · Today 17:00 CET Diamond brooch $112,297price paid Lot 95 Christie's · 10 Nov Cartier Art Deco jade, coral, diamond, emerald and enamel cigarette case ×2.3 high estimate Estimate USD 30k – 49k USD 112,297 $85,782price paid Lot 1 Christie's · 10 Nov Cartier group of diamond and onyx jewellery ×1.8 high estimate Estimate USD 30k – 49k USD 85,782 CHF 24k–40kestimate Lot 741 Christie's · Closes 18 Nov 12:00 CET Cartier suite of diamond 'Maillon panthère' jewellery CHF 24k–40kestimate Lot 775 Christie's · Closes 18 Nov 12:00 CET Cartier diamond and emerald 'Elephant' necklace CHF 28k–40kestimate Lot 712 Sotheby's · Closes 13 Nov 11:00 CET Diamond bracelet CHF 28k–40kestimate Lot 762 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond and coloured diamond earrings CHF 20k–40kestimate Lot 764 Sotheby's · Closes 13 Nov 11:00 CET Citrine, onyx, emerald and diamond 'Les oiseaux inséparables' brooch CHF 20k–40kestimate Lot 942 Sotheby's · Closes 13 Nov 11:00 CET Chrysoprase, hematite and diamond sautoir $124,774price paid Lot 15 Christie's · 10 Nov Chopard pair of conch pearl, coloured diamond and diamond earrings ×2.6 high estimate Estimate USD 30k – 49k USD 124,774 $59,268price paid Lot 11 Christie's · 10 Nov Sabbadini group of six multi-gem bee brooches ×1.2 high estimate Estimate USD 30k – 49k USD 59,268 $109,178price paid Lot 35 Christie's · 10 Nov Van Cleef & Arpels pair of diamond earrings ×2.2 high estimate Estimate USD 30k – 49k USD 109,178 $90,461price paid Lot 61 Christie's · 10 Nov Van Cleef & Arpels set of coral and diamond 'Rose de noël' jewellery ×1.9 high estimate Estimate USD 30k – 49k USD 90,461 $77,984price paid Lot 64 Christie's · 10 Nov Van Cleef & Arpels diamond, onyx and emerald panther clip-brooch ×1.6 high estimate Estimate USD 30k – 49k USD 77,984 $70,186price paid Lot 32 Christie's · 10 Nov Van Cleef & Arpels diamond bangle ×1.4 high estimate Estimate USD 30k – 49k USD 70,186 $62,387price paid Lot 72 Christie's · 10 Nov Van Cleef & Arpels diamond 'Plume' clip-brooch ×1.3 high estimate Estimate USD 30k – 49k USD 62,387 $37,432price paid Lot 507 Christie's · 10 Nov Van Cleef & Arpels mid-20th century diamond brooch ×0.8 high estimate Estimate USD 29k – 49k USD 37,432 CHF 19k–38kestimate Lot 726 Sotheby's · Closes 13 Nov 11:00 CET Diamond and emerald 'Serpenti' ring CHF 30k–38kestimate Lot 568 Sotheby's · Today 12:00 CET Mystery-set sapphire and diamond 'Festons' ring CHF 26k–36kestimate Lot 901 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels mid-20th century diamond evening bag CHF 19k–35kestimate Lot 733 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and fancy yellow diamond 'Golden orchid' earrings CHF 24k–35kestimate Lot 788 Christie's · Closes 18 Nov 12:00 CET Bulgari sapphire, coloured sapphire and diamond necklace CHF 22k–35kestimate Lot 724 Sotheby's · Closes 13 Nov 11:00 CET Gold 'Spiga' bangle CHF 22k–35kestimate Lot 743 Sotheby's · Closes 13 Nov 11:00 CET Gold 'Spiga' bangle CHF 22k–35kestimate Lot 767 Sotheby's · Closes 13 Nov 11:00 CET Onyx, emerald and diamond 'Dame à la panthère' necklace CHF 17k–35kestimate Lot 510 Sotheby's · Today 12:00 CET Enamel and diamond brooch CHF 17k–35kestimate Lot 913 Sotheby's · Closes 13 Nov 11:00 CET Pair of sapphire, ruby and diamond earrings CHF 17k–35kestimate Lot 916 Sotheby's · Closes 13 Nov 11:00 CET Emerald and tourmaline brooch CHF 26k–35kestimate Lot 533 Sotheby's · Today 12:00 CET Pair of emerald brooches CHF 24k–35kestimate Lot 662 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond 'Ludo' bracelet CHF 24k–32kestimate Lot 759 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels diamond and cultured pearl 'Cosmos' necklace CHF 22k–32kestimate Lot 804 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels pair of mid-20th century sapphire and diamond mystery-set earrings CHF 22k–32kestimate Lot 805 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels mid-20th century sapphire and diamond mystery-set clip-brooch $29,634price paid Lot 51 Christie's · 10 Nov Cartier diamond 'Ballon bleu' lady'S wristwatch ×0.8 high estimate Estimate USD 24k – 37k USD 29,634 CHF 20k–30kestimate Lot 729 Christie's · Closes 18 Nov 12:00 CET Cartier Art Deco diamond and lacquer bangle CHF 20k–30kestimate Lot 1045 Sotheby's · Today 17:00 CET Pair of emerald and diamond earclips CHF 20k–30kestimate Lot 758 Christie's · Closes 18 Nov 12:00 CET de Grisogono pair of rubellite, coloured diamond and diamond earrings CHF 20k–30kestimate Lot 777 Christie's · Closes 18 Nov 12:00 CET de Grisogono multi-gem ring CHF 20k–30kestimate Lot 785 Christie's · Closes 18 Nov 12:00 CET de Grisogono amethyst and ruby 'Cascata' lady'S wristwatch CHF 20k–30kestimate Lot 773 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond pendent earrings CHF 20k–30kestimate Lot 921 Sotheby's · Closes 13 Nov 11:00 CET Pair of tanzanite and emerald pendent earrings CHF 20k–30kestimate Lot 748 Christie's · Closes 18 Nov 12:00 CET Graff diamond 'Galaxy' lady'S wristwatch CHF 22k–30kestimate Lot 812 Sotheby's · Closes 13 Nov 11:00 CET Pair of ruby and diamond pendent earrings CHF 22k–30kestimate Lot 734 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Alchimie' bangle CHF 20k–30kestimate Lot 665 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and diamond pendent earrings CHF 20k–30kestimate Lot 924 Sotheby's · Closes 13 Nov 11:00 CET Rubellite and ruby ring CHF 20k–30kestimate Lot 1060 Sotheby's · Today 17:00 CET Sapphire and diamond demi-parure $101,379price paid Lot 62 Christie's · 10 Nov Van Cleef & Arpels pair of emerald and diamond earrings ×2.8 high estimate Estimate USD 24k – 37k USD 101,379 $62,387price paid Lot 63 Christie's · 10 Nov Van Cleef & Arpels diamond 'Double-boule' ring ×1.7 high estimate Estimate USD 24k – 37k USD 62,387 $54,589price paid Lot 36 Christie's · 10 Nov Van Cleef & Arpels sapphire and diamond bangle ×1.5 high estimate Estimate USD 24k – 37k USD 54,589 CHF 20k–30kestimate Lot 845 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels suite of diamond jewellery CHF 18k–26kestimate Lot 620 Sotheby's · Today 12:00 CET Coral, enamel and diamond vanity case CHF 17k–26kestimate Lot 661 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond evening bag CHF 15k–26kestimate Lot 914 Sotheby's · Closes 13 Nov 11:00 CET Emerald and diamond ring CHF 17k–26kestimate Lot 962 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond parure CHF 17k–26kestimate Lot 514 Sotheby's · Today 12:00 CET Art Deco jade, onyx and diamond brooch CHF 17k–26kestimate Lot 501 Sotheby's · Today 12:00 CET Pair of diamond 'Snowflake' brooches CHF 17k–26kestimate Lot 729 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Lascaux' bangle CHF 15k–25kestimate Lot 789 Sotheby's · Closes 13 Nov 11:00 CET Gold, amethyst, ruby, pink sapphire and diamond 'Froufrou' parure $77,984price paid Lot 31 Christie's · 10 Nov Buccellati emerald and diamond cuff ×2.6 high estimate Estimate USD 19k – 30k USD 77,984 $49,910price paid Lot 5 Christie's · 10 Nov Bulgari pair of cultured pearl, ruby and emerald bangles ×1.6 high estimate Estimate USD 19k – 30k USD 49,910 $37,432price paid Lot 14 Christie's · 10 Nov Bulgari set of diamond 'Astrale' jewellery ×1.2 high estimate Estimate USD 19k – 30k USD 37,432 $70,186price paid Lot 2 Christie's · 10 Nov Cartier pair of diamond and onyx 'Tigre' earrings ×2.3 high estimate Estimate USD 19k – 30k USD 70,186 $49,910price paid Lot 96 Christie's · 10 Nov Cartier Art Deco jade, coral, onyx, diamond and enamel vanity case ×1.6 high estimate Estimate USD 19k – 30k USD 49,910 CHF 15k–25kestimate Lot 745 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold, emerald and diamond earclips CHF 15k–25kestimate Lot 948 Sotheby's · Closes 13 Nov 11:00 CET Gold, enamel, onyx, peridot and diamond 'Panthère' necklace $77,984price paid Lot 69 Christie's · 10 Nov David morris diamond hand jewel ×2.6 high estimate Estimate USD 19k – 30k USD 77,984 CHF 18k–25kestimate Lot 718 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Précieux birkin' necklace CHF 18k–25kestimate Lot 736 Sotheby's · Closes 13 Nov 11:00 CET Gold, mother-of-pearl and diamond 'Kelly' wristwatch $74,865price paid Lot 581 Christie's · 10 Nov JAR pair of mabé pearl, coral and diamond earrings ×2.5 high estimate Estimate USD 24k – 30k USD 74,865 $74,865price paid Lot 73 Christie's · 10 Nov Van Cleef & Arpels pair of diamond earrings ×2.5 high estimate Estimate USD 19k – 30k USD 74,865 $40,552price paid Lot 74 Christie's · 10 Nov Van Cleef & Arpels pair of mid-20th century diamond 'Flammes' clip-brooches ×1.3 high estimate Estimate USD 19k – 30k USD 40,552 $101,379price paid Lot 50 Christie's · 10 Nov Cartier diamond 'Mini panthère de Cartier' lady'S wristwatch ×3.5 high estimate Estimate USD 19k – 29k USD 101,379 CHF 17k–24kestimate Lot 717 Christie's · Closes 18 Nov 12:00 CET Cartier pair of diamond earrings CHF 15k–24kestimate Lot 809 Christie's · Closes 18 Nov 12:00 CET Cartier emerald, diamond, onyx and enamel 'Panthère' necklace $23,395price paid Lot 49 Christie's · 10 Nov de Grisogono sapphire, diamond, enamel and galuchat 'Instrumentino' wristwatch ×0.8 high estimate Estimate USD 19k – 29k USD 23,395 CHF 16k–24kestimate Lot 776 Christie's · Closes 18 Nov 12:00 CET Tiffany & Co. multi-gem necklace CHF 18k–24kestimate Lot 754 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels group of turquoise and mother-of-pearl jewellery CHF 13k–22kestimate Lot 668 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Tubogas' choker necklace CHF 13k–22kestimate Lot 511 Sotheby's · Today 12:00 CET Art Deco rock crystal and diamond jabot brooch CHF 13k–22kestimate Lot 513 Sotheby's · Today 12:00 CET Art Deco rock crystal, onyx and diamond double clip-brooch CHF 13k–22kestimate Lot 518 Sotheby's · Today 12:00 CET Art Deco nephrite, lapis lazuli and diamond brooch CHF 13k–22kestimate Lot 563 Sotheby's · Today 12:00 CET Art Deco pair of aquamarine and diamond brooches CHF 17k–22kestimate Lot 766 Sotheby's · Closes 13 Nov 11:00 CET Lacquer, rock crystal and diamond bangle CHF 13k–22kestimate Lot 905 Sotheby's · Closes 13 Nov 11:00 CET Pair of sapphire, pink sapphire and diamond pendent earclips CHF 13k–22kestimate Lot 912 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond sautoir CHF 10k–22kestimate Lot 517 Sotheby's · Today 12:00 CET Nephrite, ruby, sapphire and diamond brooch CHF 13k–22kestimate Lot 530 Sotheby's · Today 12:00 CET Three gem-set and diamond 'Rose de noël' brooches CHF 10k–20kestimate Lot 888 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Trika' wristwatch $96,700price paid Lot 25 Christie's · 10 Nov Cartier Art Deco multi-gem and enamel cigarette case ×4.0 high estimate Estimate USD 15k – 24k USD 96,700 $70,186price paid Lot 88 Christie's · 10 Nov Cartier Art Deco lapis lazuli, jade, coral, diamond, sapphire and enamel cigarette case ×2.9 high estimate Estimate USD 15k – 24k USD 70,186 $29,634price paid Lot 27 Christie's · 10 Nov Cartier Art Deco rock crystal, diamond and enamel cigarette case ×1.2 high estimate Estimate USD 15k – 24k USD 29,634 CHF 15k–20kestimate Lot 792 Christie's · Closes 18 Nov 12:00 CET Cartier Belle Époque diamond and seed pearl 'Tortue' wristwatch CHF 15k–20kestimate Lot 653 Sotheby's · Closes 13 Nov 11:00 CET Turquoise, citrine, ruby and diamond brooch CHF 10k–20kestimate Lot 893 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and emerald earclips $62,387price paid Lot 4 Christie's · 10 Nov JAR spinel ring ×2.6 high estimate Estimate USD 15k – 24k USD 62,387 CHF 10k–20kestimate Lot 919 Sotheby's · Closes 13 Nov 11:00 CET Pink sapphire, emerald and diamond brooch $85,782price paid Lot 41 Christie's · 10 Nov Tiffany & Co. Art Deco diamond and enamel travel clock ×3.5 high estimate Estimate USD 15k – 24k USD 85,782 $59,268price paid Lot 120 Christie's · 10 Nov Van Cleef & Arpels pair of coloured diamond and diamond 'Passementerie' earrings ×2.4 high estimate Estimate USD 15k – 24k USD 59,268 CHF 10k–20kestimate Lot 703 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels lapis lazuli and diamond 'Alhambra' bracelet CHF 10k–19kestimate Lot 632 Sotheby's · Today 12:00 CET Art Deco ruby and diamond brooch CHF 15k–19kestimate Lot 760 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond sautoir $34,313price paid Lot 29 Christie's · 10 Nov Cartier early 20th century agate, diamond, sapphire and enamel case ×1.6 high estimate Estimate USD 12k – 22k USD 34,313 CHF 10k–18kestimate Lot 761 Christie's · Closes 18 Nov 12:00 CET Cartier pair of sapphire and diamond earrings CHF 12k–18kestimate Lot 864 Christie's · Closes 18 Nov 12:00 CET Cartier diamond and gold 'Tank américane' chronograph wristwatch CHF 12k–18kestimate Lot 213 Christie's · Closes 17 Nov 12:00 CET Cartier gold 'Ballon bleu' lady'S wristwatch CHF 12k–18kestimate Lot 1046 Sotheby's · Today 17:00 CET Ruby, emerald and diamond brooch CHF 12k–18kestimate Lot 348 Christie's · Closes 17 Nov 12:00 CET David morris pair of diamond hoop earrings CHF 12k–18kestimate Lot 778 Christie's · Closes 18 Nov 12:00 CET de Grisogono pair of multi-gem earrings CHF 12k–18kestimate Lot 779 Christie's · Closes 18 Nov 12:00 CET de Grisogono multi-gem ring CHF 12k–18kestimate Lot 250 Christie's · Closes 17 Nov 12:00 CET de Grisogono diamond and coloured diamond 'Instrumentino' wristwatch CHF 12k–18kestimate Lot 345 Christie's · Closes 17 Nov 12:00 CET Graff diamond cross necklace CHF 14k–18kestimate Lot 717 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Amulettes' charm bracelet CHF 12k–18kestimate Lot 748 Sotheby's · Closes 13 Nov 11:00 CET Rock crystal and diamond demi-parure CHF 12k–18kestimate Lot 269 Christie's · Closes 17 Nov 12:00 CET Piaget amethyst, coral and diamond necklace $37,432price paid Lot 45 Christie's · 10 Nov Van Cleef & Arpels Art Deco multi-gem and enamel vanity case ×1.7 high estimate Estimate USD 12k – 22k USD 37,432 CHF 12k–18kestimate Lot 772 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels retro diamond 'Dentelle' clip-brooch CHF 12k–18kestimate Lot 204 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels cultured pearl and diamond sautoir CHF 12k–18kestimate Lot 352 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels mother-of-pearl, diamond and enamel 'Lady arpels 4 saisons opéra' wristwatch CHF 10k–17kestimate Lot 509 Sotheby's · Today 12:00 CET Art Deco opal, demantoid garnet and diamond brooch CHF 9k–17kestimate Lot 520 Sotheby's · Today 12:00 CET Art Deco lapis lazuli, enamel and diamond clip CHF 9k–17kestimate Lot 897 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'C de Cartier' demi-parure CHF 9k–17kestimate Lot 840 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Happy diamonds' wristwatch CHF 9k–17kestimate Lot 526 Sotheby's · Today 12:00 CET Bakelite, onyx and diamond 'La ménagerie magnétique' brooch CHF 13k–17kestimate Lot 884 Sotheby's · Closes 13 Nov 11:00 CET Amethyst, morganite and diamond 'Bird on a rock' brooch/pendant CHF 10k–17kestimate Lot 503 Sotheby's · Today 12:00 CET Attractive gold, ruby and diamond 'Ballerina' brooch CHF 9k–17kestimate Lot 504 Sotheby's · Today 12:00 CET Ruby, onyx and diamond brooch CHF 10k–15kestimate Lot 708 Christie's · Closes 18 Nov 12:00 CET Bulgari emerald ring Russia · Moderate oil CHF 10k–15kestimate Lot 794 Sotheby's · Closes 13 Nov 11:00 CET Pair of amethyst, sapphire, coloured sapphire and diamond pendent earrings CHF 10k–15kestimate Lot 713 Christie's · Closes 18 Nov 12:00 CET Cartier set of ruby, emerald, sapphire and diamond 'Byzantine' jewellery CHF 10k–15kestimate Lot 745 Christie's · Closes 18 Nov 12:00 CET Cartier diamond necklace CHF 10k–15kestimate Lot 803 Christie's · Closes 18 Nov 12:00 CET Cartier pair of Art Deco diamond earrings CHF 10k–15kestimate Lot 864 Sotheby's · Closes 13 Nov 11:00 CET Gold, enamel, gem-set and diamond vanity case CHF 10k–15kestimate Lot 941 Sotheby's · Closes 13 Nov 11:00 CET Gem-set and diamond 'Arbuste persan' brooch CHF 10k–15kestimate Lot 895 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond 'Happy diamonds' demi-parure CHF 10k–15kestimate Lot 784 Christie's · Closes 18 Nov 12:00 CET de Grisogono multi-gem ring CHF 10k–15kestimate Lot 249 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of coloured diamond and diamond earrings CHF 10k–15kestimate Lot 775 Sotheby's · Closes 13 Nov 11:00 CET Pair of pink opal and pink sapphire pendent earrings CHF 10k–15kestimate Lot 844 Sotheby's · Closes 13 Nov 11:00 CET Aquamarine and diamond bangle CHF 10k–15kestimate Lot 845 Sotheby's · Closes 13 Nov 11:00 CET Aquamarine and diamond ring CHF 10k–15kestimate Lot 846 Sotheby's · Closes 13 Nov 11:00 CET Pair of aquamarine and diamond earrings CHF 10k–15kestimate Lot 952 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond brooch CHF 10k–15kestimate Lot 238 Christie's · Closes 17 Nov 12:00 CET Hermes diamond 'Precieux kelly' sautoir CHF 10k–15kestimate Lot 735 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Kelly gavroche' necklace CHF 10k–15kestimate Lot 1022 Sotheby's · Today 17:00 CET Belle epoque diamond brooch CHF 10k–15kestimate Lot 782 Christie's · Closes 18 Nov 12:00 CET Michele della valle multi-gem 'Hommage à dürer' clip-brooch CHF 10k–15kestimate Lot 823 Christie's · Closes 18 Nov 12:00 CET Michele della valle ruby and diamond rose clip-brooch CHF 10k–15kestimate Lot 235 Christie's · Closes 17 Nov 12:00 CET Sabbadini diamond eternity ring CHF 10k–15kestimate Lot 808 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels retro ruby and gold 'Cadenas' wristwatch CHF 10k–15kestimate Lot 502 Sotheby's · Today 12:00 CET Diamond 'Flamme' brooch CHF 11k–15kestimate Lot 651 Sotheby's · Closes 13 Nov 11:00 CET Gold, turquoise and diamond 'Trèfle' brooch CHF 10k–15kestimate Lot 715 Sotheby's · Closes 13 Nov 11:00 CET Chalcedony and diamond necklace CHF 12k–15kestimate Lot 966 Sotheby's · Closes 13 Nov 11:00 CET Gold and emerald sautoir CHF 7k–14kestimate Lot 515 Sotheby's · Today 12:00 CET Diamond and ruby 'Le baiser du dragon' clip CHF 7k–14kestimate Lot 516 Sotheby's · Today 12:00 CET Jadeite, lacquer, ruby and diamond brooch CHF 9k–13kestimate Lot 790 Sotheby's · Closes 13 Nov 11:00 CET Pair of ruby, amethyst, cultured pearl and diamond pendent earrings CHF 9k–13kestimate Lot 900 Sotheby's · Closes 13 Nov 11:00 CET Gold and sapphire necklace CHF 9k–13kestimate Lot 506 Sotheby's · Today 12:00 CET Elegant pair of belle epoque rock crystal and diamond cufflinks CHF 7k–13kestimate Lot 633 Sotheby's · Today 12:00 CET Art Deco gem-set and diamond 'Tutti Frutti' brooch CHF 9k–13kestimate Lot 965 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold, gem-set and diamond earclips CHF 9k–13kestimate Lot 770 Sotheby's · Closes 13 Nov 11:00 CET Lacquer and diamond 'Tiger' wristwatch CHF 9k–13kestimate Lot 684 Sotheby's · Closes 13 Nov 11:00 CET Diamond bracelet CHF 9k–13kestimate Lot 969 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond evening bag CHF 9k–13kestimate Lot 960 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond 'Cadenas' wristwatch CHF 8k–12kestimate Lot 873 Christie's · Closes 18 Nov 12:00 CET Boucheron diamond toi et moi ring CHF 8k–12kestimate Lot 878 Christie's · Closes 18 Nov 12:00 CET Bulgari set of multi-gem 'Allegra' jewellery CHF 8k–12kestimate Lot 212 Christie's · Closes 17 Nov 12:00 CET Bulgari diamond 'Parentesi' bangle $77,984price paid Lot 91 Christie's · 10 Nov Cartier Art Deco jade, coral, sapphire, emerald, diamond and enamel vanity case ×5.3 high estimate Estimate USD 10k – 15k USD 77,984 $54,589price paid Lot 44 Christie's · 10 Nov Cartier Art Deco carnelian, diamond and enamel case ×3.7 high estimate Estimate USD 10k – 15k USD 54,589 $49,910price paid Lot 24 Christie's · 10 Nov Cartier Art Deco coral, enamel and diamond cigarette case ×3.4 high estimate Estimate USD 10k – 15k USD 49,910 $37,432price paid Lot 60 Christie's · 10 Nov Cartier coral, onyx and diamond box ×2.6 high estimate Estimate USD 10k – 15k USD 37,432 CHF 8k–12kestimate Lot 222 Christie's · Closes 17 Nov 12:00 CET Cartier diamond, emerald and onyx 'Panthère' pendant with diamond chain CHF 6k–12kestimate Lot 949 Sotheby's · Closes 13 Nov 11:00 CET Gold, onyx and emerald 'Panthère' brooch CHF 6k–12kestimate Lot 950 Sotheby's · Closes 13 Nov 11:00 CET Gold, onyx and emerald 'Panthère' bangle CHF 8k–12kestimate Lot 954 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond brooch CHF 8k–12kestimate Lot 877 Christie's · Closes 18 Nov 12:00 CET de Grisogono pair of tourmaline, coloured sapphire and diamond earrings CHF 8k–12kestimate Lot 254 Christie's · Closes 17 Nov 12:00 CET de Grisogono coloured diamond and enamel 'Instrumento no.uno dual time' wristwatch CHF 8k–12kestimate Lot 256 Christie's · Closes 17 Nov 12:00 CET de Grisogono group of diamond and coloured diamond 'Feuilles' jewellery CHF 8k–12kestimate Lot 749 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond ring CHF 6k–12kestimate Lot 863 Sotheby's · Closes 13 Nov 11:00 CET Art Nouveau gold, hardstone, emerald and diamond brooch CHF 8k–12kestimate Lot 858 Christie's · Closes 18 Nov 12:00 CET Fred pair of coloured diamond and diamond earrings Fancy Yellow · VVS2 CHF 8k–12kestimate Lot 1050 Sotheby's · Today 17:00 CET Charming Art Deco diamond brooch CHF 8k–12kestimate Lot 233 Christie's · Closes 17 Nov 12:00 CET Sabbadini carbon fiber, ruby and diamond cuff CHF 10k–12kestimate Lot 841 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels pair of diamond 'Eucalyptus' earrings CHF 8k–12kestimate Lot 350 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels mother-of-pearl, enamel and diamond 'Une journee a paris' wristwatch CHF 8k–12kestimate Lot 351 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels diamond and leather 'étincelle' cuff CHF 8k–12kestimate Lot 672 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond brooch CHF 8k–12kestimate Lot 731 Sotheby's · Closes 13 Nov 11:00 CET Mother-of-pearl and diamond 'Rose de noel' brooch/pendant and a pair of 'Nerval' earrings CHF 10k–12kestimate Lot 732 Sotheby's · Closes 13 Nov 11:00 CET Mother-of-pearl 'Magic alhambra' sautoir CHF 7k–10kestimate Lot 664 Sotheby's · Closes 13 Nov 11:00 CET Gold and cultured pearl brooch CHF 7k–10kestimate Lot 508 Sotheby's · Today 12:00 CET Pair of pearl and diamond cufflinks CHF 7k–10kestimate Lot 744 Sotheby's · Closes 13 Nov 11:00 CET Pair of citrine and diamond earrings CHF 7k–10kestimate Lot 799 Sotheby's · Closes 13 Nov 11:00 CET Ruby and diamond pendent necklace $34,313price paid Lot 48 Christie's · 10 Nov Cartier Art Deco jade, diamond and enamel vanity case ×2.8 high estimate Estimate USD 9k – 12k USD 34,313 CHF 8k–10kestimate Lot 859 Christie's · Closes 18 Nov 12:00 CET Cartier diamond 'Baignoire' lady'S wristwatch CHF 7k–10kestimate Lot 660 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond wristwatch CHF 7k–10kestimate Lot 817 Christie's · Closes 18 Nov 12:00 CET Mellerio pair of mid-20th century chrysoprase and ruby bird brooches with an associated chrysoprase, ruby and sapphire bird brooch CHF 5k–10kestimate Lot 838 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Sixteen stone' ring CHF 7k–10kestimate Lot 663 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold, tiger'S eye, lapis lazili and diamond pendent earrings CHF 6k–10kestimate Lot 973 Sotheby's · Closes 13 Nov 11:00 CET Gold, malachite, blue agate and diamond 'Arlequine' necklace CHF 7k–10kestimate Lot 344 Christie's · Closes 17 Nov 12:00 CET Boucheron diamond 'Marchesa' bracelet CHF 7k–10kestimate Lot 215 Christie's · Closes 17 Nov 12:00 CET Cartier diamond 'Vendome' wristwatch CHF 7k–10kestimate Lot 216 Christie's · Closes 17 Nov 12:00 CET Cartier enamel and sapphire 'Pasha' wristwatch CHF 7k–10kestimate Lot 848 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Zigana' demi-parure CHF 7k–10kestimate Lot 234 Christie's · Closes 17 Nov 12:00 CET Sabbadini pair of diamond earrings CHF 7k–10kestimate Lot 201 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels diamond, emerald and enamel 'Lion ébouriffé' clip-brooch CHF 7k–10kestimate Lot 203 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels diamond ring CHF 6k–9kestimate Lot 223 Christie's · Closes 17 Nov 12:00 CET Bulgari diamond 'Astrale' sautoir CHF 7k–9kestimate Lot 709 Christie's · Closes 18 Nov 12:00 CET Cartier pair of diamond flower earrings CHF 7k–9kestimate Lot 895 Christie's · Closes 18 Nov 12:00 CET Fabergé early 20th century gold cigarette case CHF 7k–9kestimate Lot 896 Christie's · Closes 18 Nov 12:00 CET Fabergé early 20th century gold cigarette case CHF 4k–9kestimate Lot 771 Sotheby's · Closes 13 Nov 11:00 CET Emerald, onyx and diamond 'Panthère' pendent necklace CHF 6k–8kestimate Lot 953 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and ruby earclips CHF 6k–8kestimate Lot 667 Sotheby's · Closes 13 Nov 11:00 CET Gold, ancient coin and ruby 'Monete' bangle CHF 5k–8kestimate Lot 694 Sotheby's · Closes 13 Nov 11:00 CET Jadeite and diamond ring CHF 6k–8kestimate Lot 801 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond earclips CHF 5k–8kestimate Lot 214 Christie's · Closes 17 Nov 12:00 CET Cartier coloured sapphire 'Tank divan' wristwatch CHF 5k–8kestimate Lot 273 Christie's · Closes 17 Nov 12:00 CET Cartier diamond ring and bracelet, with three enamel egg charms CHF 6k–8kestimate Lot 1026 Sotheby's · Today 17:00 CET Art Deco diamond brooch CHF 5k–8kestimate Lot 754 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond bracelet CHF 6k–8kestimate Lot 850 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels diamond and ruby lady'S wristwatch CHF 5k–8kestimate Lot 695 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and diamond 'Buttercup' earclips CHF 5k–8kestimate Lot 725 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'Sweet alhambra' bracelet CHF 6k–8kestimate Lot 899 Sotheby's · Closes 13 Nov 11:00 CET Sapphire and diamond demi-parure CHF 5k–7kestimate Lot 1028 Sotheby's · Today 17:00 CET Art Deco sapphire and diamond wristwatch CHF 5k–7kestimate Lot 802 Sotheby's · Closes 13 Nov 11:00 CET Diamond ring CHF 5k–7kestimate Lot 971 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond wristwatch CHF 5k–7kestimate Lot 734 Christie's · Closes 18 Nov 12:00 CET Mellerio mid 20th century chrysoprase, emerald, ruby and diamond bird brooch with an associated emerald and ruby bird brooch CHF 5k–7kestimate Lot 824 Christie's · Closes 18 Nov 12:00 CET Michele della valle pair of coloured sapphire and diamond earrings CHF 5k–7kestimate Lot 772 Sotheby's · Closes 13 Nov 11:00 CET Amethyst and diamond bangle CHF 5k–7kestimate Lot 961 Sotheby's · Closes 13 Nov 11:00 CET Gold, cultured pearl and ruby brooch CHF 5k–7kestimate Lot 711 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels retro sapphire and diamond 'Myosotis' clip-brooch CHF 5k–7kestimate Lot 677 Sotheby's · Closes 13 Nov 11:00 CET Gold, emerald, enamel and diamond 'Lion ébouriffé' brooch CHF 4k–7kestimate Lot 951 Sotheby's · Closes 13 Nov 11:00 CET Gold, onyx, emerald, ruby and diamond brooch CHF 4k–7kestimate Lot 507 Sotheby's · Today 12:00 CET Art Deco pair of coral, onyx and diamond cufflinks CHF 5k–7kestimate Lot 958 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby, onyx and diamond brooch CHF 4k–7kestimate Lot 963 Sotheby's · Closes 13 Nov 11:00 CET Gold, ruby and diamond brooch CHF 5k–7kestimate Lot 832 Sotheby's · Closes 13 Nov 11:00 CET Diamond wristwatch CHF 5k–7kestimate Lot 777 Sotheby's · Closes 13 Nov 11:00 CET Pair of pink sapphire, coloured diamond, onyx and diamond earrings CHF 4k–7kestimate Lot 850 Sotheby's · Closes 13 Nov 11:00 CET Diamond 'If you need me just whistle' bracelet CHF 4k–7kestimate Lot 959 Sotheby's · Closes 13 Nov 11:00 CET Gold, chrysoberyl, sapphire and ruby brooch CHF 4k–6kestimate Lot 206 Christie's · Closes 17 Nov 12:00 CET Emerald and diamond ring, monture Boucheron CHF 5k–6kestimate Lot 696 Sotheby's · Closes 13 Nov 11:00 CET Silver, silver-gilt, sapphire and ruby minaudière and a vanity case CHF 4k–6kestimate Lot 211 Christie's · Closes 17 Nov 12:00 CET Bulgari diamond 'Parentesi' bracelet CHF 4k–6kestimate Lot 224 Christie's · Closes 17 Nov 12:00 CET Bulgari diamond 'Astrale' necklace CHF 4k–6kestimate Lot 741 Sotheby's · Closes 13 Nov 11:00 CET Pair of intaglio and diamond earrings CHF 4k–6kestimate Lot 943 Sotheby's · Closes 13 Nov 11:00 CET Silver, gold and emerald pendant and a pair of cultured pearl earrings CHF 4k–6kestimate Lot 258 Christie's · Closes 17 Nov 12:00 CET Chopard mother-of-pearl, coloured diamond and diamond 'La strada' wristwatch CHF 4k–6kestimate Lot 226 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of cultured pearl and ruby earrings CHF 4k–6kestimate Lot 248 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of diamond and coloured diamond earrings CHF 4k–6kestimate Lot 251 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of emerald and diamond 'Boule' earrings CHF 4k–6kestimate Lot 252 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of coloured sapphire and diamond 'Boule' earrings CHF 4k–6kestimate Lot 271 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of coral, emerald and diamond earrings CHF 4k–6kestimate Lot 826 Sotheby's · Closes 13 Nov 11:00 CET Platinum and diamond bracelet CHF 4k–6kestimate Lot 957 Sotheby's · Closes 13 Nov 11:00 CET Gold and diamond brooch CHF 4k–6kestimate Lot 774 Christie's · Closes 18 Nov 12:00 CET Van Cleef & Arpels mid-20th century ruby, diamond and enamel yorkshire dog clip-brooch CHF 3k–5kestimate Lot 806 Christie's · Closes 18 Nov 12:00 CET Boucheron diamond flower brooch CHF 3k–5kestimate Lot 831 Christie's · Closes 18 Nov 12:00 CET Boucheron diamond ring CHF 4k–5kestimate Lot 242 Christie's · Closes 17 Nov 12:00 CET Boucheron diamond ring CHF 5k–5kestimate Lot 768 Sotheby's · Closes 13 Nov 11:00 CET Pair of diamond pendent earrings CHF 3k–5kestimate Lot 763 Sotheby's · Closes 13 Nov 11:00 CET Onyx and diamond 'Le baiser du dragon' ring CHF 5k–5kestimate Lot 742 Sotheby's · Closes 13 Nov 11:00 CET Coloured sapphire and diamond 'Copacabana' ring CHF 4k–5kestimate Lot 247 Christie's · Closes 17 Nov 12:00 CET de Grisogono group of coloured cultured pearl, coloured diamond and diamond jewellery CHF 4k–5kestimate Lot 253 Christie's · Closes 17 Nov 12:00 CET de Grisogono pair of multi-gem rings CHF 4k–5kestimate Lot 268 Christie's · Closes 17 Nov 12:00 CET Piaget enamel and diamond wristwatch CHF 3k–5kestimate Lot 773 Christie's · Closes 18 Nov 12:00 CET Tiffany & Co. mid-20th century diamond brooch CHF 4k–5kestimate Lot 270 Christie's · Closes 17 Nov 12:00 CET Van Cleef & Arpels emerald and diamond ring CHF 3k–5kestimate Lot 1040 Sotheby's · Today 17:00 CET Styptor and sapphire minaudière CHF 4k–5kestimate Lot 758 Sotheby's · Closes 13 Nov 11:00 CET Pair of gold and diamond 'Eucalyptus' earrings CHF 3k–5kestimate Lot 1079 Sotheby's · Today 17:00 CET Collection of four gouaché jewellery designs CHF 3k–4kestimate Lot 671 Sotheby's · Closes 13 Nov 11:00 CET Tourmaline and diamond pendent necklace $18,716price paid Lot 40 Christie's · 10 Nov Cartier Art Deco agate, sapphire and enamel plaque for a car dashboard ×3.8 high estimate Estimate USD 3k – 5k USD 18,716 CHF 2k–4kestimate Lot 259 Christie's · Closes 17 Nov 12:00 CET Chopard mother-of-pearl, diamond and coloured sapphire 'Imperiale' wristwatch CHF 2k–4kestimate Lot 255 Christie's · Closes 17 Nov 12:00 CET de Grisogono galuchat, ruby and diamond cuff CHF 2k–4kestimate Lot 267 Christie's · Closes 17 Nov 12:00 CET Mauboussin morganite, coloured diamond and diamond ring CHF 2k–4kestimate Lot 207 Christie's · Closes 17 Nov 12:00 CET Trianon pair of lemonwood, turquoise and pearl earrings CHF 2k–2kestimate Lot 208 Christie's · Closes 17 Nov 12:00 CET Bulgari sapphire and gold pill box CHF 2k–2kestimate Lot 236 Christie's · Closes 17 Nov 12:00 CET Sabbadini pair of coloured sapphire and amethyst earrings