Sales/Results·Sotheby's London·31 March 2021·Online auction L21050
Fine Jewels
$2.01m in total, buyer’s premium included

138 lots sold (Sotheby’s does not list the unsold lots)
Top lots per carat 11 lots · the highest prices per carat of the sale
$25,260per carat
Lot 160
Diamond ring, 'L'Air'
1.51 ct · F · Internally Flawless
×2.3 high estimate
Estimate USD 11k – 17k
USD 38,143$25,260 per carat
$23,859per carat
Lot 38
Emerald and diamond necklace
8.72 ct · Zambia
×1.0 high estimate
Estimate USD 165k – 206k
USD 208,051$23,859 per carat
$13,135per carat
Lot 164
Fancy deep yellowish-orange diamond and diamond ring
0.66 ct · Fancy Deep Yellowish-Orange · SI1
×0.8 high estimate
Estimate USD 8k – 11k
USD 8,669$13,135 per carat
$8,872per carat
Lot 50
Diamond ring, 1930s
6.84 ct
×0.8 high estimate
Estimate USD 48k – 76k
USD 60,682$8,872 per carat
$5,186per carat
Lot 125
Diamond ring
1.17 ct · E · VVS1
×1.1 high estimate
Estimate USD 4k – 6k
USD 6,068$5,186 per carat
$4,841per carat
Lot 82
Ruby and diamond ring
1.97 ct
×1.0 high estimate
Estimate USD 8k – 10k
USD 9,536$4,841 per carat
$4,363per carat
Lot 53
Diamond ring
1.51 ct
×1.0 high estimate
Estimate USD 6k – 7k
USD 6,588$4,363 per carat
$4,255per carat
Lot 62
Diamond ring
3.26 ct
×1.3 high estimate
Estimate USD 7k – 10k
USD 13,870$4,255 per carat
$2,347per carat
Lot 73
Sapphire and diamond ring
5.91 ct
×1.4 high estimate
Estimate USD 8k – 10k
USD 13,870$2,347 per carat
$2,174per carat
Lot 116
Unmounted emerald
6.38 ct
×0.8 high estimate
Estimate USD 11k – 17k
USD 13,870$2,174 per carat
$1,811per carat
Lot 128
Emerald and diamond ring
7.66 ct
×0.8 high estimate
Estimate USD 11k – 17k
USD 13,870$1,811 per carat
Sapphires 1 lots
Origin not reported
Rubies 1 lots
Origin not reported
Emeralds 3 lots
$23,859per carat
Lot 38
Emerald and diamond necklace
8.72 ct · Zambia
×1.0 high estimate
Estimate USD 165k – 206k
USD 208,051$23,859 per carat
$2,174per carat
Lot 116
Unmounted emerald
6.38 ct
×0.8 high estimate
Estimate USD 11k – 17k
USD 13,870$2,174 per carat
$1,811per carat
Lot 128
Emerald and diamond ring
7.66 ct
×0.8 high estimate
Estimate USD 11k – 17k
USD 13,870$1,811 per carat
Pearls and cultured pearls 13 lots
$29,474price paid
Lot 79
Natural pearl and seed pearl parure, 1830s
×4.3 high estimate
Estimate USD 4k – 7k
USD 29,474
$15,604price paid
Lot 157
Natural pearl, emerald and diamond necklace, early 20th century
×1.6 high estimate
Estimate USD 7k – 10k
USD 15,604
$8,669price paid
Lot 27
Pair of natural pearl and diamond earrings, early 20th century composite
×1.3 high estimate
Estimate USD 4k – 7k
USD 8,669
$7,802price paid
Lot 169
Natural pearl and diamond necklace
×0.9 high estimate
Estimate USD 6k – 8k
USD 7,802
$6,588price paid
Lot 28
Natural pearl, seed pearl, ruby, enamel and diamond necklace, early 20th century
×1.0 high estimate
Estimate USD 4k – 7k
USD 6,588
$15,604price paid
Lot 94
Cultured pearl and diamond necklace
×2.3 high estimate
Estimate USD 4k – 7k
USD 15,604
$10,403price paid
Lot 150
Cultured pearl, sapphire and diamond necklace
×0.9 high estimate
Estimate USD 8k – 11k
USD 10,403
$3,814price paid
Lot 96
Pair of turbo shell and cultured pearl ear clips
×0.9 high estimate
Estimate USD 3k – 4k
USD 3,814
$3,121price paid
Lot 110
Pair of cultured pearl, sapphire and diamond ear clips
×1.0 high estimate
Estimate USD 2k – 3k
USD 3,121
$1,560price paid
Lot 181
Cultured pearl cufflinks, Tiffany & Co.; and three dress studs
×1.3 high estimate
Estimate USD 963 – 1k
USD 1,560
$6,588price paid
Lot 80
Turquoise, seed pearl and diamond parure, late 19th century
×1.2 high estimate
Estimate USD 5k – 6k
USD 6,588
$3,814price paid
Lot 108
Mother of pearl, enamel and diamond brooch
×0.7 high estimate
Estimate USD 4k – 6k
USD 3,814
$2,427price paid
Lot 182
Two sets of dress studs and a mother of pearl and seed pearl dress set, early 20th century
×2.9 high estimate
Estimate USD 550 – 826
USD 2,427
Signed jewels 54 lots
$4,161price paid
Lot 70
Pair of tourmaline and diamond cufflinks
×1.0 high estimate
Estimate USD 3k – 4k
USD 4,161
$5,201price paid
Lot 16
Opal cameo brooch
×0.9 high estimate
Estimate USD 4k – 6k
USD 5,201
$34,675price paid
Lot 105
Pair of diamond earrings, 'Cinna pampilles'
×0.8 high estimate
Estimate USD 28k – 41k
USD 34,675
$16,471price paid
Lot 64
Ruby and diamond bracelet, 1977
×0.8 high estimate
Estimate USD 14k – 21k
USD 16,471
$6,935price paid
Lot 67
Two pairs of gem set cufflinks
×0.8 high estimate
Estimate USD 6k – 8k
USD 6,935
$6,935price paid
Lot 69
Pair of emerald and diamond cufflinks
×1.7 high estimate
Estimate USD 3k – 4k
USD 6,935
$4,161price paid
Lot 129
Lady'S wristwatch
×0.9 high estimate
Estimate USD 3k – 4k
USD 4,161
$4,161price paid
Lot 185
Boucheron | ruby dress set | dress set
×1.5 high estimate
Estimate USD 2k – 3k
USD 4,161
$34,675price paid
Lot 14
Necklace
×1.7 high estimate
Estimate USD 14k – 21k
USD 34,675
$32,941price paid
Lot 15
Demi-parure, 'Trika', 1990s
×1.6 high estimate
Estimate USD 14k – 21k
USD 32,941
$19,071price paid
Lot 123
Diamond necklace, 'Parentesi'
×1.8 high estimate
Estimate USD 9k – 10k
USD 19,071
$11,269price paid
Lot 13
Pair of diamond ear clips, 'Trika', 1990s
×2.7 high estimate
Estimate USD 3k – 4k
USD 11,269
$8,669price paid
Lot 10
Citrine necklace, 1970s
×0.9 high estimate
Estimate USD 7k – 10k
USD 8,669
$20,805price paid
Lot 4
Sapphire, enamel and diamond brooch, late 19th century
×1.9 high estimate
Estimate USD 8k – 11k
USD 20,805
$31,208price paid
Lot 189
Diamond and onyx parrot brooch
×1.1 high estimate
Estimate USD 22k – 28k
USD 31,208
$27,740price paid
Lot 111
Sapphire and diamond demi-parure
×1.0 high estimate
Estimate USD 22k – 28k
USD 27,740
$20,805price paid
Lot 12
Bracelet, circa 1973
×1.9 high estimate
Estimate USD 8k – 11k
USD 20,805
$19,071price paid
Lot 42
Pair of onyx and diamond earrings
×2.0 high estimate
Estimate USD 7k – 10k
USD 19,071
$16,471price paid
Lot 24
Sapphire and diamond clip brooch, 1930s
×0.8 high estimate
Estimate USD 14k – 21k
USD 16,471
$10,403price paid
Lot 40
Pair of diamond earrings
×1.5 high estimate
Estimate USD 4k – 7k
USD 10,403
$3,814price paid
Lot 175
Pair of ruby cufflinks, 1940s
×2.3 high estimate
Estimate USD 1k – 2k
USD 3,814
$2,427price paid
Lot 172
Pair of cufflinks, 'Trinity'
×1.5 high estimate
Estimate USD 1k – 2k
USD 2,427
$2,427price paid
Lot 178
Pair of sapphire cufflinks, 1950s
×1.5 high estimate
Estimate USD 1k – 2k
USD 2,427
$25,260per carat
Lot 160
Diamond ring, 'L'Air'
1.51 ct · F · Internally Flawless
×2.3 high estimate
Estimate USD 11k – 17k
USD 38,143$25,260 per carat
$5,201price paid
Lot 106
Diamond earrings | cultured pearl and diamond bracelet
×0.8 high estimate
Estimate USD 4k – 7k
USD 5,201
$2,081price paid
Lot 84
Diamond ring
×0.8 high estimate
Estimate USD 2k – 3k
USD 2,081
$8,322price paid
Lot 35
Diamond bracelet, 'Cašmir'
×1.2 high estimate
Estimate USD 4k – 7k
USD 8,322
$6,068price paid
Lot 58
Jadeite necklace
×0.8 high estimate
Estimate USD 4k – 8k
USD 6,068
$5,548price paid
Lot 107
Diamond and black enamel brooch, 'Zig zag' and a diamond and black enamel pendant
×1.1 high estimate
Estimate USD 4k – 5k
USD 5,548
$11,269price paid
Lot 60
Brooch, 'Teree', 1960s
×1.4 high estimate
Estimate USD 6k – 8k
USD 11,269
$6,588price paid
Lot 87
Diamond cigarette case, 1909
×2.7 high estimate
Estimate USD 2k – 2k
USD 6,588
$86,688price paid
Lot 155
Pair of emerald and diamond earrings
×2.0 high estimate
Estimate USD 39k – 44k
USD 86,688
$83,220price paid
Lot 18
Coloured diamond and diamond necklace
×0.8 high estimate
Estimate USD 83k – 110k
USD 83,220
$55,480price paid
Lot 45
Pair of emerald and diamond earrings
×1.3 high estimate
Estimate USD 36k – 44k
USD 55,480
$27,740price paid
Lot 49
Pair of ruby and diamond earrings
×2.5 high estimate
Estimate USD 8k – 11k
USD 27,740
$26,006price paid
Lot 146
Sapphire and diamond bracelet
×0.9 high estimate
Estimate USD 21k – 28k
USD 26,006
$4,855price paid
Lot 109
Diamond demi-parure
×0.7 high estimate
Estimate USD 4k – 7k
USD 4,855
$4,508price paid
Lot 9
Pair of ear clips
×0.8 high estimate
Estimate USD 4k – 6k
USD 4,508
$11,269price paid
Lot 101
Sapphire and diamond bracelet
×1.5 high estimate
Estimate USD 6k – 8k
USD 11,269
$8,669price paid
Lot 47
Coral, enamel, chrysoprase and diamond brooch, 1960s
×2.1 high estimate
Estimate USD 3k – 4k
USD 8,669
$9,536price paid
Lot 153
Amethyst, blue topaz and diamond pendant
×1.7 high estimate
Estimate USD 4k – 6k
USD 9,536
$15,604price paid
Lot 94
Cultured pearl and diamond necklace
×2.3 high estimate
Estimate USD 4k – 7k
USD 15,604
$5,201price paid
Lot 71
Pair of ruby and diamond cufflinks
×0.8 high estimate
Estimate USD 4k – 7k
USD 5,201
$9,536price paid
Lot 143
Amethyst and tourmaline demi-parure
×0.9 high estimate
Estimate USD 7k – 11k
USD 9,536
$3,814price paid
Lot 96
Pair of turbo shell and cultured pearl ear clips
×0.9 high estimate
Estimate USD 3k – 4k
USD 3,814
$10,403price paid
Lot 150
Cultured pearl, sapphire and diamond necklace
×0.9 high estimate
Estimate USD 8k – 11k
USD 10,403
$4,508price paid
Lot 173
Schlumberger for tiffany & co | diamond dress set | two pairs of cufflinks
×1.6 high estimate
Estimate USD 1k – 3k
USD 4,508
$1,560price paid
Lot 181
Cultured pearl cufflinks, Tiffany & Co.; and three dress studs
×1.3 high estimate
Estimate USD 963 – 1k
USD 1,560
$22,539price paid
Lot 36
Pair of yellow sapphire, emerald and diamond ear clips
×3.3 high estimate
Estimate USD 4k – 7k
USD 22,539
$15,604price paid
Lot 46
Sapphire, emerald and diamond brooch, 1960s
×2.1 high estimate
Estimate USD 5k – 8k
USD 15,604
$12,136price paid
Lot 139
Pair of turquoise and diamond ear clips, 1960s
×1.5 high estimate
Estimate USD 6k – 8k
USD 12,136
$6,935price paid
Lot 83
Ruby and diamond pendant watch, circa 1955
×0.8 high estimate
Estimate USD 6k – 8k
USD 6,935
$5,548price paid
Lot 177
Lapis lazuli dress set | three diamond studs, 1970s
×1.3 high estimate
Estimate USD 3k – 4k
USD 5,548
$4,161price paid
Lot 174
Tiffany & co | sapphire dress set | Van Cleef & Arpels | ruby dress studs and ruby stick pin
×1.5 high estimate
Estimate USD 2k – 3k
USD 4,161
Vintage 23 lots
$8,872per carat
Lot 50
Diamond ring, 1930s
6.84 ct
×0.8 high estimate
Estimate USD 48k – 76k
USD 60,682$8,872 per carat
$20,805price paid
Lot 4
Sapphire, enamel and diamond brooch, late 19th century
×1.9 high estimate
Estimate USD 8k – 11k
USD 20,805
$19,071price paid
Lot 29
Pink topaz, emerald, pearl and diamond necklace, late 19th century
×6.3 high estimate
Estimate USD 2k – 3k
USD 19,071
$16,471price paid
Lot 24
Sapphire and diamond clip brooch, 1930s
×0.8 high estimate
Estimate USD 14k – 21k
USD 16,471
$15,604price paid
Lot 157
Natural pearl, emerald and diamond necklace, early 20th century
×1.6 high estimate
Estimate USD 7k – 10k
USD 15,604
$15,604price paid
Lot 89
Pair of diamond earrings/pendants, late 19th century
×1.9 high estimate
Estimate USD 6k – 8k
USD 15,604
$12,136price paid
Lot 7
Sapphire bracelet, circa 1938
×1.0 high estimate
Estimate USD 10k – 12k
USD 12,136
$11,269price paid
Lot 23
Diamond double-clip brooch, 1930s
×1.4 high estimate
Estimate USD 6k – 8k
USD 11,269
$10,403price paid
Lot 141
Sapphire and diamond ring, late 19th century
×0.9 high estimate
Estimate USD 8k – 11k
USD 10,403
$9,536price paid
Lot 85
Pair of turquoise and diamond ear clips, circa 1945
×1.0 high estimate
Estimate USD 7k – 10k
USD 9,536
$9,536price paid
Lot 21
Moonstone and diamond bracelet, early 20th century
×1.4 high estimate
Estimate USD 4k – 7k
USD 9,536
$8,669price paid
Lot 27
Pair of natural pearl and diamond earrings, early 20th century composite
×1.3 high estimate
Estimate USD 4k – 7k
USD 8,669
$8,322price paid
Lot 158
Diamond brooch, 1930s
×1.1 high estimate
Estimate USD 6k – 8k
USD 8,322
$6,935price paid
Lot 83
Ruby and diamond pendant watch, circa 1955
×0.8 high estimate
Estimate USD 6k – 8k
USD 6,935
$6,588price paid
Lot 28
Natural pearl, seed pearl, ruby, enamel and diamond necklace, early 20th century
×1.0 high estimate
Estimate USD 4k – 7k
USD 6,588
$6,588price paid
Lot 80
Turquoise, seed pearl and diamond parure, late 19th century
×1.2 high estimate
Estimate USD 5k – 6k
USD 6,588
$4,508price paid
Lot 6
Amethyst and diamond brooch, circa 1910
×1.6 high estimate
Estimate USD 2k – 3k
USD 4,508
$3,814price paid
Lot 175
Pair of ruby cufflinks, 1940s
×2.3 high estimate
Estimate USD 1k – 2k
USD 3,814
$3,468price paid
Lot 5
Rock crystal, sapphire and diamond jabot pin, circa 1910
×0.8 high estimate
Estimate USD 3k – 4k
USD 3,468
$3,121price paid
Lot 32
Ruby, sapphire and diamond brooch, 1940s
×0.8 high estimate
Estimate USD 3k – 4k
USD 3,121
$2,427price paid
Lot 178
Pair of sapphire cufflinks, 1950s
×1.5 high estimate
Estimate USD 1k – 2k
USD 2,427
$2,427price paid
Lot 182
Two sets of dress studs and a mother of pearl and seed pearl dress set, early 20th century
×2.9 high estimate
Estimate USD 550 – 826
USD 2,427
$1,907price paid
Lot 33
Gem set and diamond brooch, mid 20th century
×0.8 high estimate
Estimate USD 2k – 2k
USD 1,907
Other jewels 53 lots
$60,682price paid
Lot 161
Pair of emerald and diamond earrings
×1.1 high estimate
Estimate USD 41k – 55k
USD 60,682
$60,682price paid
Lot 22
Diamond line necklace
×1.5 high estimate
Estimate USD 28k – 41k
USD 60,682
$32,941price paid
Lot 166
Pair of ruby and diamond earrings
×1.0 high estimate
Estimate USD 26k – 33k
USD 32,941
$32,941price paid
Lot 30
Topaz parure, 1830s
×2.7 high estimate
Estimate USD 10k – 12k
USD 32,941
$24,273price paid
Lot 122
Ruby and diamond ring
×1.0 high estimate
Estimate USD 17k – 25k
USD 24,273
$22,539price paid
Lot 2
Diamond ring, circa 1800
×5.5 high estimate
Estimate USD 3k – 4k
USD 22,539
$16,471price paid
Lot 159
Diamond bracelet
×2.4 high estimate
Estimate USD 4k – 7k
USD 16,471
$13,870price paid
Lot 151
Diamond necklace and bracelet
×0.8 high estimate
Estimate USD 11k – 17k
USD 13,870
$13,870price paid
Lot 20
Diamond bracelet
×1.1 high estimate
Estimate USD 10k – 13k
USD 13,870
$13,003price paid
Lot 78
Turquoise and diamond demi-parure, 1840s and later
×1.2 high estimate
Estimate USD 8k – 11k
USD 13,003
$13,003price paid
Lot 81
Pair of diamond earrings
×1.6 high estimate
Estimate USD 7k – 8k
USD 13,003
$13,003price paid
Lot 156
Diamond bracelet
×1.6 high estimate
Estimate USD 7k – 8k
USD 13,003
$13,003price paid
Lot 171
Diamond and coloured diamond dress set
×1.6 high estimate
Estimate USD 6k – 8k
USD 13,003
$13,003price paid
Lot 130
James ganh | pair of opal triplet and diamond cufflinks
×1.7 high estimate
Estimate USD 6k – 8k
USD 13,003
$11,269price paid
Lot 152
Pair of sapphire and diamond earclips
×1.0 high estimate
Estimate USD 8k – 11k
USD 11,269
$11,269price paid
Lot 149
Diamond bracelet
×1.1 high estimate
Estimate USD 8k – 10k
USD 11,269
$9,536price paid
Lot 1
Topaz and diamond clasp, 1820s
×1.0 high estimate
Estimate USD 7k – 10k
USD 9,536
$9,536price paid
Lot 134
Diamond and gem-set necklace
×1.3 high estimate
Estimate USD 6k – 8k
USD 9,536
$9,536price paid
Lot 184
Three diamond dress sets
×2.0 high estimate
Estimate USD 4k – 5k
USD 9,536
$8,669price paid
Lot 126
Pair of emerald and diamond earrings
×1.1 high estimate
Estimate USD 5k – 8k
USD 8,669
$8,669price paid
Lot 102
Diamond ring
×1.3 high estimate
Estimate USD 4k – 7k
USD 8,669
$8,322price paid
Lot 76
Sapphire and diamond ring
×1.0 high estimate
Estimate USD 6k – 8k
USD 8,322
$8,322price paid
Lot 132
James ganh | pair of opal triplet and diamond cufflinks
×1.1 high estimate
Estimate USD 6k – 8k
USD 8,322
$8,322price paid
Lot 179
Six pair of gem set cufflinks and six dress buttons
×3.0 high estimate
Estimate USD 1k – 3k
USD 8,322
$7,802price paid
Lot 147
Sapphire and diamond ring
×1.4 high estimate
Estimate USD 4k – 6k
USD 7,802
$7,282price paid
Lot 144
Gem set and diamond bangle
×0.9 high estimate
Estimate USD 6k – 8k
USD 7,282
$7,282price paid
Lot 88
Necklace, 1860s
×1.1 high estimate
Estimate USD 4k – 7k
USD 7,282
$7,282price paid
Lot 55
Tsavorite garnet, ruby and enamel brooch
×2.4 high estimate
Estimate USD 2k – 3k
USD 7,282
$6,935price paid
Lot 48
Nardi, attributed to | gem-set and diamond ring, 1960s
×0.7 high estimate
Estimate USD 7k – 10k
USD 6,935
$6,935price paid
Lot 91
James ganh | ruby and diamond brooch/pendant necklace
×0.8 high estimate
Estimate USD 6k – 8k
USD 6,935
$6,935price paid
Lot 56
Aquamarine and diamond ring
×1.0 high estimate
Estimate USD 4k – 7k
USD 6,935
$6,935price paid
Lot 57
Peridot and diamond bracelet
×1.0 high estimate
Estimate USD 6k – 7k
USD 6,935
$6,935price paid
Lot 112
Bracelet
×1.0 high estimate
Estimate USD 4k – 7k
USD 6,935
$6,935price paid
Lot 121
Pair of ruby and diamond earrings
×1.0 high estimate
Estimate USD 5k – 7k
USD 6,935
$6,935price paid
Lot 34
Pair of emerald and diamond ear clips
×1.1 high estimate
Estimate USD 5k – 6k
USD 6,935
$6,935price paid
Lot 183
Three pairs of gem set and diamond cufflinks
×2.5 high estimate
Estimate USD 1k – 3k
USD 6,935
$6,588price paid
Lot 77
Sapphire dress set
×1.0 high estimate
Estimate USD 5k – 7k
USD 6,588
$6,068price paid
Lot 11
Sapphire cigarette case
×0.8 high estimate
Estimate USD 5k – 8k
USD 6,068
$6,068price paid
Lot 75
Carl ernst | coloured diamond and diamond brooch, 1960s
×0.9 high estimate
Estimate USD 4k – 7k
USD 6,068
$6,068price paid
Lot 72
Aquamarine and ruby ring
×1.0 high estimate
Estimate USD 5k – 6k
USD 6,068
$5,548price paid
Lot 61
Pair of coral, ruby and diamond earrings
×1.0 high estimate
Estimate USD 5k – 6k
USD 5,548
$5,201price paid
Lot 140
Demi-parure
×1.2 high estimate
Estimate USD 4k – 4k
USD 5,201
$5,201price paid
Lot 163
Pair of diamond earrings
×1.3 high estimate
Estimate USD 3k – 4k
USD 5,201
$5,201price paid
Lot 168
Turquoise and diamond demi-parure
×1.3 high estimate
Estimate USD 3k – 4k
USD 5,201
$4,508price paid
Lot 131
Nephrite and ruby pendant necklace
×1.1 high estimate
Estimate USD 4k – 4k
USD 4,508
$4,161price paid
Lot 90
Bangle
×1.1 high estimate
Estimate USD 3k – 4k
USD 4,161
$3,814price paid
Lot 3
Topaz and diamond clasp, 1840s
×1.0 high estimate
Estimate USD 3k – 4k
USD 3,814
$3,814price paid
Lot 186
Six pairs of gem set cufflinks
×1.8 high estimate
Estimate USD 1k – 2k
USD 3,814
$3,468price paid
Lot 176
Nine pairs of cufflinks
×2.1 high estimate
Estimate USD 1k – 2k
USD 3,468
$3,294price paid
Lot 86
Pair of enamel cufflinks, 1918
×1.6 high estimate
Estimate USD 1k – 2k
USD 3,294
$3,294price paid
Lot 187
Eight pairs of cufflinks
×2.7 high estimate
Estimate USD 963 – 1k
USD 3,294
$3,121price paid
Lot 119
Pair of coral and diamond ear clips
×0.8 high estimate
Estimate USD 3k – 4k
USD 3,121
$1,387price paid
Lot 180
Three pairs of cufflinks
×0.8 high estimate
Estimate USD 1k – 2k
USD 1,387
Prices are the prices paid, buyer’s premium included, as Sotheby’s publishes them; prices per carat and comparisons with the estimates use them too (Sotheby’s estimates do not include the premium). Prices in USD at the ECB rate of 31 March 2021. Photographs © Sotheby’s 2021.