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$7M Historic Yellow Diamond to Headline Sotheby’s Sale

May 7, 2024  |  Leah Meirovich

A 101.29-carat yellow diamond brooch by Cartier with historical origin is set to lead the upcoming Geneva auction at Sotheby’s, where it is expected to bring in up to CHF 6.5 million ($7.2 million). 

The round-cornered square brilliant-cut, fancy-vivid-yellow, VS2-clarity stone, known as the Allnatt Diamond, was designed as the center of a flower, with petals and leaves set with diamonds. The brooch, created in 1952, was from the collection of soldier, sportsman, art patron and benefactor Major Alfred Ernest Allnatt, Sotheby’s said Tuesday. 

The stone, which was originally 102.07 carats, was last sold at Christie’s in Geneva in 1996 for $3 million, before being recut to its current size. It was also displayed as part of the Smithsonian’s “The Splendor of Diamonds” exhibition. 

The jewel is among many by well-known design houses that will feature in the Magnificent Jewels and Noble Jewels sale, which will take place on May 14.  

Here are the rest of the top 10 items: 

37.61-carat, E-color, internally flawless diamond image
An unmounted round-cornered square brilliant-cut, 37.61-carat, E-color, internally flawless diamond has a high estimate of CHF 2.4 million ($2.6 million). 
Burmese sapphire earrings with center stones image
These earrings contain oval Burmese sapphire center stones weighing 14.66 and 13.94 carats, surrounded by marquise-shaped, blue-tinted diamonds. They carry an upper presale price of CHF 1.5 million ($1.6 million). 
21.35-carat, fancy-vivid-yellow diamond ring image
Sotheby’s will sell this cut-cornered rectangular modified mixed-cut, 21.35-carat, fancy-vivid-yellow, VS2-clarity diamond ring for up to CHF 1.3 million ($1.4 million). 
diamond-covered sapphire parure image
A diamond-covered parure will be on offer. It comprises a pendant necklace with an oval, 51.77-carat Ceylon sapphire; a bracelet containing an oval, 20.77-carat Ceylon sapphire; a pair of earrings set with oval Ceylon sapphire weighing 8.43 and 8.12 carats; a ring bearing an oval, 11.59-carat Ceylon sapphire; and a wristwatch, signed by designer Gérald Genta, with a cushion-shaped lapis lazuli dial. Together the pieces carry a high estimate of CHF 1.1 million ($1.2 million). 
Toi et moi ring by James Taffin de Givenchy image
A toi et moi ring by James Taffin de Givenchy for Sotheby’s Diamonds will go on the auction block. The jewel, which contains a pear-shaped, 3.03-carat, fancy-intense-blue, I1-clarity diamond and a pear-shaped, 2.82-carat, D-color, VVS1-clarity diamond with the potential to be internally flawless, has an upper valuation of CHF 1.1 million ($1.2 million). 
Necklace containing 37 oval natural pearls image
This necklace containing 37 oval natural pearls was created around 1920 and was previously in the collection of Maharani Gayatri Devi, rajmata of Jaipur. It is expected to fetch up to CHF 730,000 ($803,870). 
17.29-carat Kashmir sapphire ring image
A cushion-shaped, 17.29-carat Kashmir sapphire set between two triangular-shaped diamonds has an upper price tag of CHF 800,000 ($880,970). 
Necklace featuring 12.12-carat diamond image
A necklace featuring a pear-shaped, 12.12-carat, E-color, internally flawless diamond pendant suspended from an oval diamond carries a high estimate of CHF 730,000 ($803,870). 
2.47-carat, yellowish-green diamond ring image
This old mine brilliant-cut, 2.47-carat, fancy-intense-yellowish-green, SI2-clarity diamond ring by JAR was formerly in the collection of Countess Eliza Krasinska. Sotheby’s estimates it will realize up to CHF 640,000 ($705,022). 

Main image: The Allnatt yellow diamond. (Sotheby’s)

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$7M Historic Yellow Diamond to Headline Sotheby’s Sale

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