Sales/Results·Bonhams London·5 June 2025·Live auction 30671
London Jewels
$5.09m in total, buyer’s premium included
Top lots per carat 11 lots · the highest prices per carat of the sale
$312,785per carat
Lot 73
Coloured diamond and diamond earrings
0.47 ct
×3.6 high estimate
Estimate USD 27k – 41k
USD 147,009$312,785 per carat
$85,998per carat
Lot 72
Coloured diamond and diamond ring
2.01 ct · Fancy Intense Orangy Pink · VS1
×0.8 high estimate
Estimate USD 136k – 204k
USD 172,856$85,998 per carat
$75,232per carat
Lot 91
Emerald and diamond ring, circa 1930
4.13 ct · Colombia · Insignificant oil
×4.6 high estimate
Estimate USD 41k – 68k
USD 310,707$75,232 per carat
$13,974per carat
Lot 84
Boucheron: emerald and diamond ring, circa 1965
3.48 ct
×1.4 high estimate
Estimate USD 20k – 34k
USD 48,628$13,974 per carat
$13,120per carat
Lot 82
Cartier: ruby and diamond ring
5.03 ct · Thailand · Heated
×2.4 high estimate
Estimate USD 20k – 27k
USD 65,995$13,120 per carat
$11,411per carat
Lot 90
Sapphire and diamond ring, circa 1930
6.39 ct
×1.8 high estimate
Estimate USD 27k – 41k
USD 72,914$11,411 per carat
$9,594per carat
Lot 78
Bulgari: sapphire, emerald and diamond 'Trombino' ring
7.60 ct · Ceylon · No heat
×0.7 high estimate
Estimate USD 68k – 109k
USD 72,914$9,594 per carat
$8,906per carat
Lot 77
Bulgari: sapphire and diamond ring
7.80 ct · Burma · No heat
×0.7 high estimate
Estimate USD 68k – 95k
USD 69,468$8,906 per carat
$6,240per carat
Lot 51
Ruby and diamond ring
5.01 ct
×0.8 high estimate
Estimate USD 27k – 41k
USD 31,261$6,240 per carat
$882per carat
Lot 53
Sapphire and diamond ring
14.76 ct
×0.6 high estimate
Estimate USD 14k – 20k
USD 13,025$882 per carat
$762per carat
Lot 66
Birks: sapphire and diamond bracelet, circa 1945
13.68 ct
×0.6 high estimate
Estimate USD 11k – 16k
USD 10,420$762 per carat
Sapphires 7 lots
$9,594per carat
Lot 78
Bulgari: sapphire, emerald and diamond 'Trombino' ring
7.60 ct · Ceylon · No heat
×0.7 high estimate
Estimate USD 68k – 109k
USD 72,914$9,594 per carat
$38,207price paid
Lot 46
Meister: sapphire and diamond 'Night and day' pendent earclips, circa 1975
Ceylon · No heat
×0.9 high estimate
Estimate USD 27k – 41k
USD 38,207
$8,906per carat
Lot 77
Bulgari: sapphire and diamond ring
7.80 ct · Burma · No heat
×0.7 high estimate
Estimate USD 68k – 95k
USD 69,468$8,906 per carat
Lot 56
Monture mauboussin: sapphire and diamond ring
8.56 ct · Burma · No heat
Estimate USD 24k – 34k
Not sold
$11,411per carat
Lot 90
Sapphire and diamond ring, circa 1930
6.39 ct
×1.8 high estimate
Estimate USD 27k – 41k
USD 72,914$11,411 per carat
$882per carat
Lot 53
Sapphire and diamond ring
14.76 ct
×0.6 high estimate
Estimate USD 14k – 20k
USD 13,025$882 per carat
$762per carat
Lot 66
Birks: sapphire and diamond bracelet, circa 1945
13.68 ct
×0.6 high estimate
Estimate USD 11k – 16k
USD 10,420$762 per carat
Rubies 3 lots
$13,120per carat
Lot 82
Cartier: ruby and diamond ring
5.03 ct · Thailand · Heated
×2.4 high estimate
Estimate USD 20k – 27k
USD 65,995$13,120 per carat
$32,997price paid
Lot 18
Art Deco ruby, diamond and enamel ring, circa 1920
2.30 ct · Burma · No heat
×1.6 high estimate
Estimate USD 14k – 20k
USD 32,997
$6,240per carat
Lot 51
Ruby and diamond ring
5.01 ct
×0.8 high estimate
Estimate USD 27k – 41k
USD 31,261$6,240 per carat
Emeralds 3 lots
$75,232per carat
Lot 91
Emerald and diamond ring, circa 1930
4.13 ct · Colombia · Insignificant oil
×4.6 high estimate
Estimate USD 41k – 68k
USD 310,707$75,232 per carat
$13,974per carat
Lot 84
Boucheron: emerald and diamond ring, circa 1965
3.48 ct
×1.4 high estimate
Estimate USD 20k – 34k
USD 48,628$13,974 per carat
$38,207price paid
Lot 83
Boucheron: emerald and diamond earclips, circa 1960
×2.3 high estimate
Estimate USD 11k – 16k
USD 38,207
Coloured diamonds 3 lots
$312,785per carat
Lot 73
Coloured diamond and diamond earrings
0.47 ct
×3.6 high estimate
Estimate USD 27k – 41k
USD 147,009$312,785 per carat
$85,998per carat
Lot 72
Coloured diamond and diamond ring
2.01 ct · Fancy Intense Orangy Pink · VS1
×0.8 high estimate
Estimate USD 136k – 204k
USD 172,856$85,998 per carat
Pearls and cultured pearls 9 lots
$241,782price paid
Lot 87
Natural pearl and diamond necklace
×2.2 high estimate
Estimate USD 81k – 109k
USD 241,782
$138,394price paid
Lot 43
Natural pearl and ruby necklace
×4.1 high estimate
Estimate USD 20k – 34k
USD 138,394
$10,420price paid
Lot 10
Natural pearl and diamond clover bangle, circa 1890
×1.0 high estimate
Estimate USD 8k – 11k
USD 10,420
Lot 85
Van cleef and arpels: cultured pearl and diamond necklace, circa 1960
Estimate USD 47k – 68k
Not sold
Lot 54
Cultured pearl and diamond necklace
Estimate USD 14k – 20k
Not sold
$19,104price paid
Lot 19
Natural-pearl and diamond necklace
×2.0 high estimate
Estimate USD 7k – 9k
USD 19,104
$11,289price paid
Lot 17
Art Deco pearl, onyx and diamond bracelet, circa 1920
×0.7 high estimate
Estimate USD 11k – 16k
USD 11,289
Lot 28A
Pearl and diamond tiara/necklace/bracelet combination, mid 20th century
Estimate USD 27k – 41k
Not sold
Lot 32
Pearl and diamond necklace, early 20th century
Estimate USD 7k – 9k
Not sold
Signed jewels 49 lots
$762per carat
Lot 66
Birks: sapphire and diamond bracelet, circa 1945
13.68 ct
×0.6 high estimate
Estimate USD 11k – 16k
USD 10,420$762 per carat
$276,244price paid
Lot 69
Boodles: diamond single stone ring, 2009
×1.7 high estimate
Estimate USD 109k – 163k
USD 276,244
$19,104price paid
Lot 70
Boodles: diamond and coloured diamond 'Maymay rose' bracelet, 2009
×0.9 high estimate
Estimate USD 14k – 20k
USD 19,104
$9,552price paid
Lot 71
Boodles: cherry blossom diamond pendant
×0.7 high estimate
Estimate USD 9k – 14k
USD 9,552
$13,974per carat
Lot 84
Boucheron: emerald and diamond ring, circa 1965
3.48 ct
×1.4 high estimate
Estimate USD 20k – 34k
USD 48,628$13,974 per carat
$38,207price paid
Lot 83
Boucheron: emerald and diamond earclips, circa 1960
×2.3 high estimate
Estimate USD 11k – 16k
USD 38,207
$34,734price paid
Lot 41
Boucheron: turquoise and gem-set bracelet, circa 1960
×1.3 high estimate
Estimate USD 20k – 27k
USD 34,734
Lot 49
Gianmaria Buccellati: ribbon bow and agate shell necklace
Estimate USD 14k – 20k
Not sold
$9,594per carat
Lot 78
Bulgari: sapphire, emerald and diamond 'Trombino' ring
7.60 ct · Ceylon · No heat
×0.7 high estimate
Estimate USD 68k – 109k
USD 72,914$9,594 per carat
$8,906per carat
Lot 77
Bulgari: sapphire and diamond ring
7.80 ct · Burma · No heat
×0.7 high estimate
Estimate USD 68k – 95k
USD 69,468$8,906 per carat
$7,815price paid
Lot 24
Bulgari: bicoloured 'Parentesi' bracelet
×1.0 high estimate
Estimate USD 5k – 8k
USD 7,815
Lot 76
Bulgari: sapphire and diamond collar necklace
Estimate USD 27k – 41k
Not sold
$1,206,738price paid
Lot 101
Cartier: the astor turquoise and diamond tiara, 1930
×2.5 high estimate
Estimate USD 339k – 475k
USD 1,206,738
$65,995price paid
Lot 97
Cartier: emerald and diamond clip, mid 20th century
×1.4 high estimate
Estimate USD 34k – 47k
USD 65,995
$13,120per carat
Lot 82
Cartier: ruby and diamond ring
5.03 ct · Thailand · Heated
×2.4 high estimate
Estimate USD 20k – 27k
USD 65,995$13,120 per carat
$48,628price paid
Lot 98
Cartier: diamond earclips, circa 1930
×1.8 high estimate
Estimate USD 20k – 27k
USD 48,628
$43,418price paid
Lot 80
Cartier: 'Mahango' collar and bracelet suite (2)
×2.1 high estimate
Estimate USD 14k – 20k
USD 43,418
$38,207price paid
Lot 63
Cartier: citrine and diamond clip, circa 1930
×1.4 high estimate
Estimate USD 20k – 27k
USD 38,207
$29,524price paid
Lot 37
Cartier: enamel, diamond and gem-set 'Panthère' pendant necklace
×1.5 high estimate
Estimate USD 14k – 20k
USD 29,524
$26,051price paid
Lot 95
Cartier: emerald and diamond clip, circa 1930
×1.0 high estimate
Estimate USD 20k – 27k
USD 26,051
$26,051price paid
Lot 96
Cartier: diamond and onyx dress watch, circa 1912
×1.3 high estimate
Estimate USD 14k – 20k
USD 26,051
$22,577price paid
Lot 58
Cartier: diamond-set 'Maillon panthère' necklace and bracelet suite (2)
×1.1 high estimate
Estimate USD 14k – 20k
USD 22,577
$20,840price paid
Lot 61
Cartier: diamond-set 'C de Cartier' earclips
×3.8 high estimate
Estimate USD 4k – 5k
USD 20,840
$17,367price paid
Lot 59
Cartier: diamond and gem-set 'Panthère' pendant necklace
×2.1 high estimate
Estimate USD 5k – 8k
USD 17,367
$15,630price paid
Lot 23
Cartier: gem-set 'Panthère' necklace
×1.4 high estimate
Estimate USD 7k – 11k
USD 15,630
$15,630price paid
Lot 60
Cartier: diamond and gem-set 'Panthère de Cartier' ring
×1.9 high estimate
Estimate USD 5k – 8k
USD 15,630
$14,762price paid
Lot 28
Cartier: 'Maillon panthère' necklace and earclip suite (2)
×1.6 high estimate
Estimate USD 7k – 9k
USD 14,762
$13,894price paid
Lot 38
Cartier: 'Maillon panthère' diamond earclips, 1994
×1.3 high estimate
Estimate USD 8k – 11k
USD 13,894
$9,552price paid
Lot 65
Cartier: gem-set bird brooch, 1986
×1.4 high estimate
Estimate USD 4k – 7k
USD 9,552
$6,947price paid
Lot 27
Cartier: diamond-set 'Trinity' diamond earclips
×0.9 high estimate
Estimate USD 5k – 8k
USD 6,947
Lot 81
Cartier: diamond single-stone ring
Estimate USD 54k – 81k
Not sold
Lot 20
Cartier: sapphire and diamond jabot pin, circa 1919
Estimate USD 8k – 11k
Not sold
Lot 52
Cartier: diamond-set 'Maillon panthère' earclips
Estimate USD 8k – 11k
Not sold
$4,863price paid
Lot 16
Chaumet: diamond and enamel compass, circa 1915
×0.7 high estimate
Estimate USD 4k – 7k
USD 4,863
$6,078price paid
Lot 36
Elizabeth gage: carved tourmaline and diamond coin brooch, 1994
×0.6 high estimate
Estimate USD 7k – 9k
USD 6,078
$11,289price paid
Lot 47
Grima: amethyst and diamond 'Sticks and stones' brooch/pendant, torque and earclip suite, 1973 (2)
×1.0 high estimate
Estimate USD 8k – 11k
USD 11,289
$8,336price paid
Lot 48
Grima: ruby and diamond brooch, 1964
×0.9 high estimate
Estimate USD 7k – 9k
USD 8,336
$5,557price paid
Lot 44
Grima: cat'S eye tourmaline and diamond ring, circa 1986
×1.0 high estimate
Estimate USD 4k – 5k
USD 5,557
$16,499price paid
Lot 11
Janesich: emerald and diamond pendent earrings, early 20th century
×1.2 high estimate
Estimate USD 8k – 14k
USD 16,499
Lot 56
Monture mauboussin: sapphire and diamond ring
8.56 ct · Burma · No heat
Estimate USD 24k – 34k
Not sold
$38,207price paid
Lot 46
Meister: sapphire and diamond 'Night and day' pendent earclips, circa 1975
Ceylon · No heat
×0.9 high estimate
Estimate USD 27k – 41k
USD 38,207
Lot 26
Retailed by kutchinsky: diamond bracelet
Estimate USD 24k – 34k
Not sold
Lot 22
Sendon: emerald and diamond collar
Estimate USD 16k – 24k
Not sold
$60,785price paid
Lot 79
Schlumberger for tiffany: diamond and gem-set 'Leaves' necklace, circa 1980
×0.7 high estimate
Estimate USD 54k – 81k
USD 60,785
$10,420price paid
Lot 35
Tiffany: hinged cuff bangle
×1.0 high estimate
Estimate USD 8k – 11k
USD 10,420
$4,863price paid
Lot 9
Retailed by tiffany: onyx and enamel mourning brooch, circa 1890
×0.7 high estimate
Estimate USD 4k – 7k
USD 4,863
$31,261price paid
Lot 64
Van Cleef & Arpels: diamond 'Tourbillon' brooch, circa 1950
×1.9 high estimate
Estimate USD 11k – 16k
USD 31,261
Lot 85
Van cleef and arpels: cultured pearl and diamond necklace, circa 1960
Estimate USD 47k – 68k
Not sold
Vintage 32 lots
$414,095price paid
Lot 15
Diamond corsage ornament/brooch/tiara combination, mid 19th century
×3.8 high estimate
Estimate USD 68k – 109k
USD 414,095
$75,232per carat
Lot 91
Emerald and diamond ring, circa 1930
4.13 ct · Colombia · Insignificant oil
×4.6 high estimate
Estimate USD 41k – 68k
USD 310,707$75,232 per carat
$11,411per carat
Lot 90
Sapphire and diamond ring, circa 1930
6.39 ct
×1.8 high estimate
Estimate USD 27k – 41k
USD 72,914$11,411 per carat
$65,995price paid
Lot 97
Cartier: emerald and diamond clip, mid 20th century
×1.4 high estimate
Estimate USD 34k – 47k
USD 65,995
$48,628price paid
Lot 98
Cartier: diamond earclips, circa 1930
×1.8 high estimate
Estimate USD 20k – 27k
USD 48,628
$38,207price paid
Lot 63
Cartier: citrine and diamond clip, circa 1930
×1.4 high estimate
Estimate USD 20k – 27k
USD 38,207
$38,207price paid
Lot 94
Diamond and gem-set giardinetto brooch, circa 1930
×3.5 high estimate
Estimate USD 8k – 11k
USD 38,207
$34,734price paid
Lot 100
Art Deco gem-set and diamond 'Tutti Frutti' giardinetto brooch, circa 1930
×1.3 high estimate
Estimate USD 20k – 27k
USD 34,734
$32,997price paid
Lot 18
Art Deco ruby, diamond and enamel ring, circa 1920
2.30 ct · Burma · No heat
×1.6 high estimate
Estimate USD 14k – 20k
USD 32,997
$31,261price paid
Lot 64
Van Cleef & Arpels: diamond 'Tourbillon' brooch, circa 1950
×1.9 high estimate
Estimate USD 11k – 16k
USD 31,261
$26,051price paid
Lot 95
Cartier: emerald and diamond clip, circa 1930
×1.0 high estimate
Estimate USD 20k – 27k
USD 26,051
$26,051price paid
Lot 96
Cartier: diamond and onyx dress watch, circa 1912
×1.3 high estimate
Estimate USD 14k – 20k
USD 26,051
$19,104price paid
Lot 1
Gem-set floral spray brooch, second half of the 18th century
×1.2 high estimate
Estimate USD 11k – 16k
USD 19,104
$19,104price paid
Lot 93
Attributed to Cartier: carved rock crystal and diamond brooch, circa 1912
×1.2 high estimate
Estimate USD 11k – 16k
USD 19,104
$16,499price paid
Lot 11
Janesich: emerald and diamond pendent earrings, early 20th century
×1.2 high estimate
Estimate USD 8k – 14k
USD 16,499
$16,499price paid
Lot 6
Renaissance revival diamond ring, 19th century
×3.0 high estimate
Estimate USD 4k – 5k
USD 16,499
$15,630price paid
Lot 31
Emerald and diamond double-clip/brooch, mid 20th century
×0.8 high estimate
Estimate USD 14k – 20k
USD 15,630
$13,894price paid
Lot 89
Ruby and diamond brooches, mid 20th century
×0.9 high estimate
Estimate USD 11k – 16k
USD 13,894
$13,025price paid
Lot 4
Renaissance gem-set and enamel pendant, late 16th century
×0.4 high estimate
Estimate USD 22k – 34k
USD 13,025
$11,289price paid
Lot 17
Art Deco pearl, onyx and diamond bracelet, circa 1920
×0.7 high estimate
Estimate USD 11k – 16k
USD 11,289
$762per carat
Lot 66
Birks: sapphire and diamond bracelet, circa 1945
13.68 ct
×0.6 high estimate
Estimate USD 11k – 16k
USD 10,420$762 per carat
$7,815price paid
Lot 7A
Renaissance revival gem-set and enamel brooch, late 19th century
×0.8 high estimate
Estimate USD 7k – 9k
USD 7,815
$5,210price paid
Lot 3
Renaissance revival gem-set and enamel centaur pendant, 19th century
×0.5 high estimate
Estimate USD 7k – 9k
USD 5,210
$4,863price paid
Lot 16
Chaumet: diamond and enamel compass, circa 1915
×0.7 high estimate
Estimate USD 4k – 7k
USD 4,863
$4,863price paid
Lot 7
Iberian gold and diamond laça brooch, late 19th century
×0.9 high estimate
Estimate USD 4k – 5k
USD 4,863
$3,126price paid
Lot 5
Gem-set and enamel masquerade ring, late 18th century
×0.6 high estimate
Estimate USD 3k – 5k
USD 3,126
Lot 28A
Pearl and diamond tiara/necklace/bracelet combination, mid 20th century
Estimate USD 27k – 41k
Not sold
Lot 29
Art Deco diamond bracelet, circa 1930
Estimate USD 27k – 34k
Not sold
Lot 33
Diamond strap bracelet, circa 1950
Estimate USD 16k – 24k
Not sold
Lot 20
Cartier: sapphire and diamond jabot pin, circa 1919
Estimate USD 8k – 11k
Not sold
Lot 32
Pearl and diamond necklace, early 20th century
Estimate USD 7k – 9k
Not sold
Lot 2
Gem-set spray brooch, late 18th century
Estimate USD 3k – 5k
Not sold
Other jewels 22 lots
$169,410price paid
Lot 57
Diamond ring
×1.2 high estimate
Estimate USD 95k – 136k
USD 169,410
$103,931price paid
Lot 86
Diamond necklace/tiara combination, circa 1880
×1.1 high estimate
Estimate USD 68k – 95k
USD 103,931
$103,931price paid
Lot 92
Coloured diamond and diamond ring
×1.3 high estimate
Estimate USD 54k – 81k
USD 103,931
$86,700price paid
Lot 13
Diamond rivière
×1.2 high estimate
Estimate USD 61k – 75k
USD 86,700
$43,418price paid
Lot 33A
Diamond ring
×0.9 high estimate
Estimate USD 34k – 47k
USD 43,418
$32,997price paid
Lot 21
Diamond single-stone ring
×1.2 high estimate
Estimate USD 20k – 27k
USD 32,997
$31,261price paid
Lot 14
Diamond flower brooch, circa 1820 and later
×1.2 high estimate
Estimate USD 20k – 27k
USD 31,261
$24,314price paid
Lot 67
Diamond necklace
×1.0 high estimate
Estimate USD 16k – 24k
USD 24,314
$10,420price paid
Lot 45
Diamond-set bracelet
×1.0 high estimate
Estimate USD 8k – 11k
USD 10,420
$10,420price paid
Lot 68
Diamond bracelet
×1.0 high estimate
Estimate USD 8k – 11k
USD 10,420
$10,420price paid
Lot 25
Colour-change spinel and diamond ring
×1.3 high estimate
Estimate USD 5k – 8k
USD 10,420
$6,947price paid
Lot 30
Spinel and diamond ring,
×0.6 high estimate
Estimate USD 8k – 11k
USD 6,947
$6,947price paid
Lot 42
Ruby and diamond dress ring
×1.0 high estimate
Estimate USD 4k – 7k
USD 6,947
$5,557price paid
Lot 40
Spinel and diamond cluster ring
×0.7 high estimate
Estimate USD 5k – 8k
USD 5,557
Lot 88
Diamond single-stone ring
Estimate USD 81k – 109k
Not sold
Lot 55
Diamond single-stone ring
Estimate USD 34k – 47k
Not sold
Lot 50
Multi gem-set and diamond 'Tutti Frutti' bracelet
Estimate USD 27k – 41k
Not sold
Lot 62
Spinel and diamond ring
Estimate USD 16k – 24k
Not sold
Lot 8
Diamond and enamel locket bracelet and pendant suite, circa 1870 (2)
Estimate USD 9k – 14k
Not sold
Lot 34
Emerald and diamond bracelet
Estimate USD 9k – 14k
Not sold
Lot 12
Diamond brooch, circa 1800
Estimate USD 7k – 9k
Not sold
Prices are the prices paid, buyer’s premium included, as Bonhams publishes them; prices per carat and comparisons with the estimates use them too (Bonhams estimates do not include the premium). Prices in USD at the ECB rate of 5 June 2025. Photographs © Bonhams 2025.