An extremely rare diamond, a stratospheric price: the exceptional “Mellon Blue” is for sale
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EXCLUSIVE - On November 11, 2025, Christie's will auction this treasure, which belonged to American heiress Bunny Mellon, in Geneva. It had already achieved the exceptional sum of €32.6 million at a sale in 2014.
If you haven't seen Titanic , the 1997 James Cameron film, you've probably heard of it. And you may know that behind the fictionalized story of the most famous shipwreck in the history of humanity lies a fabulous and imaginary stone, the "Heart of the Ocean." This film, which won eleven Oscars, added a chapter - albeit a fictional one - to the fascinating saga of blue diamonds. Christie's is about to write another, a very real one this time, with the sale on November 11 in Geneva of the Mellon Blue. 9.75 carats! Not a single inclusion! And the most beautiful color there is: "Fancy Vivid blue"! And an illustrious provenance. The stone belonged to the famous American billionaire, Rachel Mellon, nicknamed Bunny . Dressed by Givenchy, adorned by Cartier, Van Cleef & Arpels and Tiffany & Co., creator of the most beautiful gardens in the world, Bunny Mellon is an American legend.
Throughout her life, she cultivated discretion...
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