【Geneva, Swit】Rare Mediterranean Blue Diamond to be Auctioned for Nearly $20 Million

Editor’s Note

This article details the unveiling of the ‘Mediterranean Blue Diamond,’ a 10-carat cushion-shaped gem expected to sell for up to $20 million at a Sotheby’s auction in Geneva.

Auction Announcement

A 10-carat blue diamond, expected to fetch up to $20 million at auction, was unveiled by Sotheby’s in Geneva.

The ‘Mediterranean Blue Diamond’

The cushion-shaped stone, known as the ‘Mediterranean Blue Diamond’, was mined in South Africa and exhibits a rare color described as an elegant intense blue, according to Sotheby’s.

Market Commentary
“The colored diamond market continues to strengthen,” said Jessica Wyndham of Sotheby’s, adding that she expected a price close to $20 million.
Sotheby’s High Jewelry Collection

Sotheby’s high jewelry collection, which includes other colored gemstones, was presented to journalists in Geneva ahead of a live auction scheduled at the Mandarin Oriental Hotel.

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⏰ Published on: June 02, 2025