Editor’s Note
Christie’s upcoming Magnificent Jewels sale in Geneva features “The Rock,” a historic 228.31-carat diamond with a high estimate of 30 million Swiss francs, leading a catalog aimed at collectors and investors.

The catalog is now ready. For fans of extraordinary jewelry and gemstone collectors—a particularly popular form of investment in difficult historical times—Christie’s Sale of Magnificent Jewels on May 11 at the Four Seasons Hotel des Bergues offers many opportunities. It begins with “The Rock,” a diamond starting with a very large estimate: 19 to 30 million Swiss francs (13 to 24 million euros or 9.2 to 20.5 million dollars). The diamond weighs 228.31 carats and is the largest ever seen at auction.
Rahul Kadakia, International Head of Jewelry at Christie’s.

Alongside it, the legendary Red Cross Diamond, which has supported ongoing humanitarian needs since its sale for Christie’s Red Cross Appeal in 1918, is offered with a portion of the proceeds to be donated to the International Committee of the Red Cross. Featuring the highest quality gemstones, jewels of noble provenance, and iconic designs, this season’s auction presents an exciting opportunity for our international collectors.
Max Fawcett, Department Head of Jewelry.

The Red Cross diamond, over 205 carats.
Anonymous Owner of The Red Cross Diamond.

The Magnificent Jewels auction also includes tiaras from the 19th and 20th centuries, such as the Fürstenberg Tiara (estimate 400,000–600,000 Swiss francs) and a pearl and diamond tiara bearing the mark of the famous Austrian jeweler Gustav Flach. This exquisitely handcrafted piece belonged to Her Royal Highness Princess of Fürstenberg, née Irma Countess of Schönborn-Buchheim (1867-1948), a member of one of the most significant noble families of the Habsburg Empire. A letter in the Fürstenberg archives from jeweler Flach Mediansky & Paltscho details the tiara’s many transformable possibilities—from a tiara for Viennese high-society court balls to a more modest style with pearls, while the diamond motifs can be worn as a necklace, brooch, or hairpins.
Other notable lots include a Bulgari necklace with diamonds and rubies, and Jar’s spiral earrings with green tourmalines.