Colored Diamonds Rule Sotheby’s Geneva Sales

October 26, 2025
Leah Meirovich

Sotheby’s will showcase several high-value colored diamonds as the top lots of its upcoming sales in Geneva, including a blue diamond it has priced at up to CHF 5.8 million ($7.3 million).

The unmounted oval-mixed-cut, 4.50-carat, fancy-vivid-blue, internally flawless diamond will take center stage at the November 12 High Jewelry sale, along with the Glowing Rose, a cushion-cut, 10.08-carat, fancy-vivid-pink diamond ring the auction house estimates will bring in up to $20 million.

Meanwhile, the auction house will hold its Royal & Noble Jewels sale concurrently in Geneva, featuring items that belonged to Napoleon Bonaparte, as well as those from a cousin of Louis XVI, and from Neslishah Sultan, the last Ottoman princess.

Here are the rest of the top items from the High Jewelry sale:

These earrings from Schreiner feature cushion modified brilliant-cut, fancy-vivid yellow diamonds weighing 38.66 and 38.88 carats, suspended from rectangular modified brilliant-cut diamonds weighing 2 and 2.03 carats at Sotheby's image — These earrings from Schreiner feature cushion modified brilliant-cut, fancy-vivid yellow diamonds weighing 38.66 and 38.88 carats, suspended from rectangular modified brilliant-cut diamonds weighing 2 and 2.03 carats. They have a top estimate of CHF 3.8 million ($4.8 million).

A ring with a step-cut, 10.43-carat Kashmir sapphire center stone between baguette-diamond shoulders at Sotheby's image — A ring with a step-cut, 10.43-carat Kashmir sapphire center stone between baguette-diamond shoulders has a high price of CHF 950,000 ($1.2 million)

This sapphire and diamond demi-parure comprises a necklace with cushion-shaped and oval Burmese sapphires, ranging from 1.96 to 10.08 carats, within a frame of pear, marquise, princess and brilliant diamonds, as well as a pair of pendant earrings with detachable surmounts at Sotheby's image — This sapphire and diamond demi-parure comprises a necklace with cushion-shaped and oval Burmese sapphires, ranging from 1.96 to 10.08 carats, within a frame of pear, marquise, princess and brilliant diamonds, as well as a pair of pendant earrings with detachable surmounts. It’s expected to fetch up to CHF 800,000 ($1 million).

Van Cleef & Arpels ring features a cushion-shaped, 7.69-carat Kashmir sapphire within a border of pear-shaped and brilliant-cut diamonds at Sotheby's image — Van Cleef & Arpels designed this ring around 1978. It features a cushion-shaped, 7.69-carat Kashmir sapphire within a border of pear-shaped and brilliant-cut diamonds. It’s set to go for up to CHF 650,000 ($817,099).

This Graff ring has a marquise-shaped, 10.04-carat, D-color, VVS2-clarity center stone between triangular diamond shoulders at Sotheby's image — This Graff ring has a marquise-shaped, 10.04-carat, D-color, VVS2-clarity center stone between triangular diamond shoulders. Sotheby’s has put a CHF 560,000 ($703,962) upper price on it.

This ring is set with a cushion-shaped, 12.78-carat Burmese ruby between triangular diamonds at Sotheby's image — Set with a cushion-shaped, 12.78-carat Burmese ruby between triangular diamonds, this ring has a CHF 550,000 ($691,396) top estimate.

These JAR ear clips are another designer lot, featuring an oval sapphire in a pavé-set circular-cut sapphire frame and an old mine-cut diamond embellished with tsavorite garnets at Sotheby's image — These JAR ear clips are another designer lot, featuring an oval sapphire in a pavé-set circular-cut sapphire frame and an old mine-cut diamond embellished with tsavorite garnets. They have a CHF 500,000 ($628,542) high price.

A ring with a pear-shaped, 11.19-carat, light-blue, VS1 diamond at Sotheby's image — A ring with a pear-shaped, 11.19-carat, light-blue, VS1 diamond will go on the auction block with a high price of CHF 480,000 ($603,400).

This Schreiner pendant has a pear-shaped, 15.02-carat, D, VVS1 diamond center stone at Sotheby's image — This Schreiner pendant has a pear-shaped, 15.02-carat, D, VVS1 diamond center stone and an upper price tag of CHF 480,000 ($603,400).

Here are the top pieces from the Royal & Noble Jewels sale:

Comprising a transformable jewel designed as a graduated garland of vines, this piece contains old mine-cut diamonds set throughout, as well as rose-cut diamond accents, and suspends drop-shaped and slightly baroque-shaped natural pearls. It can create two brooches, six hairpins and two tiaras. The jewel is part of a set with a brooch designed as a ribbon and featuring old mine-cut diamonds and a pearl. Coming from a European noble family, the pearls were initially the property of Prince Franz Xaver of Saxony and Poland, whose daughter was a cousin of King Louis VXI of France at Sotheby's image — Comprising a transformable jewel designed as a graduated garland of vines, this piece contains old mine-cut diamonds set throughout, as well as rose-cut diamond accents, and suspends drop-shaped and slightly baroque-shaped natural pearls. It can create two brooches, six hairpins and two tiaras. The jewel is part of a set with a brooch designed as a ribbon and featuring old mine-cut diamonds and a pearl. Coming from a European noble family, the pearls were initially the property of Prince Franz Xaver of Saxony and Poland, whose daughter was a cousin of King Louis VXI of France. It is estimated it will bring in up to CHF 500,000 ($628,542).

Cartier created this necklace, which bears an octagonal step-cut Colombian emerald weighing 11.78 carats, surmounted by an old mine-cut diamond, swing-set within an old European-cut diamond frame. The necklace also contains a marquise-shaped diamond weighing 5.54 carats and a heart-shaped, 3.12-carat diamond, as well as a cushion-shaped, 2.64-carat emerald at Sotheby's image — Cartier created this necklace, which bears an octagonal step-cut Colombian emerald weighing 11.78 carats, surmounted by an old mine-cut diamond, swing-set within an old European-cut diamond frame. The necklace also contains a marquise-shaped diamond weighing 5.54 carats and a heart-shaped, 3.12-carat diamond, as well as a cushion-shaped, 2.64-carat emerald. It belonged to Albertina Taylor Winthrop, a scion of one of New York’s wealthiest and most prominent families of the Gilded Age. It carries a high estimate of CHF 500,000 ($628,542).

This ring contains an old mine brilliant-cut, 13.86-carat, light-pink, VS2-clarity diamond, and old mine- and rose-cut embellishments at Sotheby's image — Formerly the property of Neslishah Sultan, the last Ottoman princess, this ring contains an old mine brilliant-cut, 13.86-carat, light-pink, VS2-clarity diamond, and old mine- and rose-cut embellishments. Empress Catherine I of Russia presented it as a gift to the Ottoman Sultan Ahmed III during negotiations for the Treaty of the Pruth in 1711. It has a top price of CHF 400,000 ($502,834).

This brooch, which also functions as a pendant, has an oval diamond weighing 13.04 carats in an old mine- and mazarin-cut diamond surround at Sotheby's image — This brooch, which also functions as a pendant, has an oval diamond weighing 13.04 carats in an old mine- and mazarin-cut diamond surround. Created in the early 19^th century, it was once owned by Napoleon Bonaparte, and was seized by the Prussian army as he fled the Battle of Waterloo. It has an upper estimate of CHF 200,000 ($251,417).

A diamond tiara designed as a garland of wild roses can be transformed into five brooches and two pairs of ear clips. Created around 1840. At Sotheby's image — A diamond tiara designed as a garland of wild roses can be transformed into five brooches and two pairs of ear clips. Created around 1840, it comes from a royal Asian family and was most recently in the collection of Margaret Greenhalgh, countess of Norbury. It will sell for up to CHF 170,000 ($213,704).

Main image: The 4.50-carat blue diamond. (Sotheby’s)

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Colored Diamonds Rule Sotheby’s Geneva Sales

Leah Meirovich

news@rapaport.com

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