【Geneva, Swit】Geneva Auction: The ‘Mediterranean Blue’ Diamond Begins World Tour Before Sale

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Editor’s Note

This article previews the global tour of the “Mediterranean Blue,” a rare 10-carat diamond, ahead of its multimillion-dollar auction in Geneva.

Bague en diamant ’Mediterranean Blue’ de 10,03 carats exposée avant une exposition publique à Abu Dhabi, avril 2025.
World Tour Before the Hammer Falls

A rare 10.03-carat blue diamond, estimated to be worth $20 million, was unveiled in a preview on Tuesday in Abu Dhabi, the capital of the United Arab Emirates, ahead of its auction in mid-May in Geneva, Switzerland. According to auction house Sotheby’s, the “Mediterranean Blue” diamond will also be presented to enthusiasts in Taipei, Hong Kong, and New York before the sale.

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“Blue diamonds are at the pinnacle of the rarity pyramid,” emphasized Quig Bruning, head of Sotheby’s jewelry department for North America, Europe, and the Middle East, speaking in the capital of the wealthy oil-rich emirate.
The Star of a $100 Million Collection
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The “Mediterranean Blue” will not be sold alone. It is the highlight of a collection estimated by the organizers to be worth approximately $100 million. According to a statement from the auction house, the collection includes “the world’s largest and purest diamonds, the second-largest known red diamond, and several diamonds weighing over 100 carats.”
At the Abu Dhabi preview, the meticulously cut stones were displayed alongside sumptuous jewels, including a necklace set with white diamonds featuring a pear-shaped brown diamond pendant weighing 100.26 carats.

Le président du Botswana, Mokgweetsi Masisi, tient un gros diamant de 2492 carats découvert dans la mine de Karowe. La découverte a eu lieu dans les bureaux du président à Gaborone le 22 août 2024.
For Mr. Bruning, the Gulf countries are “at the heart of the major trends in the luxury market.” With their resource-rich subsoil, low taxes, and Dubai’s hub for commerce and tourism at the crossroads of Europe and Asia, they attract the biggest fortunes and the ultra-wealthy.
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⏰ Published on: April 08, 2025