【Geneva, Swit】Rare ‘Mellon Blue’ Diamond Sells for $25 Million at Christie’s Geneva Auction

Editor’s Note

This report details the $25 million sale of the rare “Mellon Blue” diamond at Christie’s Geneva, highlighting the enduring strength of the luxury gem market.

Auction Highlights

A rare blue diamond known as the “Mellon Blue” has been sold for $25 million at a Christie’s auction in Geneva. The sale underscores the continued strength and allure of the high-end gemstone market.

Gemstone Details

The diamond, notable for its intense blue color and exceptional clarity, attracted significant interest from international collectors. The final hammer price fell within the pre-sale estimate range, confirming strong market confidence in top-tier colored diamonds.

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⏰ Published on: November 23, 2025