2 Huge Yellow Diamonds Are Heading to Auction
Christie's is selling one of the diamonds, moving forward with its Geneva jewelry auction despite the cyberattack that took down its website.

The highlight of Christie’s “Magnificent Jewels” auction in Geneva will be “The Yellow Rose,” a 202.18-carat fancy intense yellow pear modified brilliant-cut diamond mined in South Africa.
The pre-sale estimate is about CHF 4 million ($4.41 million).
There have been only two other yellow diamonds weighing more than 200 carats sold at auction, said Christie’s.
The “Magnificent Jewels” auction is slated to take place at the Four Seasons Hotel des Bergues on Wednesday, a sale that is continuing despite the fact that the auction house’s website has been offline since Thursday evening following a cyberattack.
In an Instagram post Tuesday morning, Christie’s said it is “pleased to reassure our clients that secure bidding for Magnificent Jewels will be available in person, by telephone, absentee, or through Christie’s Live.”
Christie’s Live is its livestream of the auction. The statement on Instagram said that clients who want to bid online should contact a member of the team or the bids department to register.
The accompanying “The Jewels Online: The Geneva Edit” sale was scheduled to be open for bidding online from May 8-22. Christie’s did not respond to a request for comment about the status of the sale.
Meanwhile, Sotheby’s has a sizable yellow diamond of its own heading to its “Magnificent Jewels and Noble Jewels” sale, which will be held today in Geneva.
“The Allnatt” is a 101.29-carat fancy vivid yellow diamond, mounted in a Cartier brooch.
It has a pre-sale estimate of CHF 5.6 million to 6.5 million ($6.2 million to $7.2 million).
The stone was named after its first known owner, Major Alfred Ernest Allnatt, a British sportsman, racehorse owner, philanthropist, collector, and patron of the arts.
Allnatt acquired the diamond in the early 1950s, said the auction house, and had it mounted by Cartier.
The brooch’s floral design is similar to the mounting Cartier created for the “Williamson Pink” diamond around the same years of production (1952-1953), said Sotheby’s.
The Allnatt is “one of the largest and most historically significant yellow diamonds ever discovered,” said Sotheby’s.
The diamond is from South Africa and likely was mined more than 100 years ago, it said, adding this sale marks its first appearance on the market in nearly 30 years.
The stone has been included in several exhibitions, including “The Splendor of Diamonds” in 2003 at the Smithsonian Museum of Natural History, which highlighted seven diamonds representing the best of their colors.
As for other notable auction highlights, Christie’s sales will feature diamonds, gemstones, and signed jewels from several designers, including Buccellati, Cartier, Georges Fouquet, Tiffany & Co., Jean Schlumberger, Marina B, Van Cleef & Arpels, Sterlé, and JAR.
Up for auction is an early 20th century brooch, circa 1915, belonging to Queen Victoria Eugenia, set with sugarloaf and oval-shaped cabochon emeralds and old mine-, rose-, and calibré-cut diamonds.
It has a pre-sale estimate of CHF 150,000 to 200,000 ($165,525 to $220,700).
At Sotheby’s, another top lot is a pair of earrings set with Burmese sapphires, weighing 14.66 carats and 13.94 carats, framed by marquise-shaped diamonds “of a blue tint.”
The pre-sale estimate is CHF 1 million to 1.46 million ($1.1 million to $1.6 million).
The Latest

The high-end jewelry retailer was sold to private investment firm Middle West Partners and a group of longtime clients.

The jewelry designer has partnered with Sofer Jewelry to distribute her 85-piece lab-grown diamond collection.

Dunn, this year’s Single-Store Independent inductee, is passionate about innovation and telling the story of natural diamonds.

Experience gemstones with greater precision and comfort than ever before.

The “Island Jewel” candle honors New York City and Puerto Rico and raises money for the island’s water relief efforts.

The partnership will give JA members access to preferred pricing, exclusive benefits, technology solutions, education, and resources.

Stores should expect to see the most customers on Nov. 27, and Christmas week is expected to be hectic too, as Dec. 25 falls on a Friday.

Submit your pieces for a chance to win in this year's competition.

The charm, our Piece of the Week, features brown diamond frozen hot chocolate topped with white diamond whipped cream and a ruby straw.

The watch company agreed to sell a 95 percent interest to a group comprised of F.P. Journe, Chanel, and Swiss watch exec Pierre Jacques.

This round of tariff refunds is for importers that have sued over IEEPA tariffs in the Court of International Trade and won.

It revisits the brand’s most requested silhouettes, from "Pillow"-set necklaces and bracelets to "Signature"-set rings and earrings.

The trade-only event includes buying opportunities as well as educational sessions on artisanal mining, the new Paraíba source, and more.

Ara Chanakian, a jeweler at Pattons, took home top honors in every category at Jewelers of Louisiana’s annual jewelry design competition.

The live charity benefit sale in Nashville will also feature gowns, boots, and other memorabilia from the country music legend.

Sponsored by Overnight Mountings

The supplier organization recently joined JA and JVC to have more input on political issues affecting the jewelry industry.

Blue Nile, a Signet Jewelers-owned brand, is now Royal Asscher’s exclusive licensed retailer in North America.

“Royal Oak” pays homage to the brand’s most popular watch model using 18-karat gold as well as diamonds, emeralds, and sapphires.

As part of the transition, Joseph Nicosia has stepped into the role of COO.

Participants now have until Oct. 14 to complete their submissions.

The alleged thieves used crow bars and sledgehammers to smash into jewelry stores across the state.

Ahead of the holidays, Smith urges jewelers to take a hard look at who’s buying jewelry, what they’re purchasing, and who’s stopped buying.

In the new consumer-facing campaign, four fashion and lifestyle creators share the stories behind their natural diamond pieces.

FGI President John Orrico is also leaving the company after more than 13 years.

The 2026 edition will feature presentations on alternative materials and design trends, as well as pop-up activations on the show floor.

It is the last fully operational diamond mine in Canada following the recent closures of Ekati and Diavik.
























