Rare ‘Mellon Blue’ Diamond Sells for $25 Million at Christie’s Geneva Auction | APT

The iconic ‘Mellon Blue’ diamond, a flawless 9.51-carat vivid blue gem, sold for $25 million at Christie’s Geneva auction on November 11.

This historic pear-shaped diamond, named after the renowned philanthropist Rachel Lambert “Bunny” Mellon, was displayed for the first time at auction and captivated collectors with its elegant new diamond-paved ring setting.

Estimated between $20–30 million, the sale highlights the enduring allure and value of rare gemstones in the global luxury market. Watch as the auction unfolds, from the first bids to the final hammer.

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