Christie’s Geneva sale is led by record Ocean Dream diamond
A 5.50-carat blue-green diamond doubled in value, showing how named stones, rare color and provenance can lift auction prices.
The 5.50-carat Ocean Dream drove Christie’s Geneva Magnificent Jewels sale into record territory, selling for CHF 13,567,500, or US$17,366,400, after about 20 minutes of aggressive bidding at the Four Seasons Hotel des Bergues. The triangular-cut fancy vivid blue-green diamond was estimated at CHF 7 million to 10 million, and it finished as the most expensive fancy vivid blue-green diamond ever sold at auction and the highest-priced lot of Geneva Luxury Week.
Christie’s said the room, Christie’s Live, and phone bidders all chased the stone, with collectors joining from Europe, the Americas and Asia Pacific. Interest reached 40 countries, including registrants from eight new countries, and the final lot became a three-way battle among international collectors, in the words of Christie’s Global Head of Jewellery Max Fawcett. The sale as a whole totaled CHF 51,859,550, or US$66,501,674, with 99 percent of lots sold by lot and 84 percent of the 87 lots finishing above their high estimate.
That appetite for a named, documented stone is the real lesson for birthstone jewelry. Auction buyers are paying not simply for color, but for rarity sharpened by identity: a stone with a formal name, a distinct history, a precise weight, and an unusually vivid color grade. Christie’s described Ocean Dream as the largest fancy vivid blue-green diamond known to exist and as GIA certified since the organization’s founding in 1931. The rough stone was reportedly found in Central Africa in the 1990s and originally weighed 11.70 carats. Those details matter because they turn a beautiful gem into a singular object with a paper trail.
Ocean Dream also showed how value can compound when a stone reappears with the right story. Christie’s Geneva sold it in May 2014 for about CHF 7.7 million, roughly US$7.8 million, meaning the diamond more than doubled in value over 12 years. That kind of jump does not automatically translate to every colored birthstone, but it does show what the top end of the market rewards: unusual color, impeccable size, and a stone identity that can survive decades.
Other results reinforced the same pattern. A two-row natural pearl and diamond necklace brought CHF 4,147,000, more than four times its low estimate, while a diamond and ruby Boucheron necklace made for the 1925 Exposition Internationale des Arts Décoratifs in Paris sold for CHF 1,206,500. A Cartier sautoir worn in The Great Gatsby brought CHF 444,500. In Geneva, rarity alone was not enough; provenance, craftsmanship and a memorable story moved the strongest prices.
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