AUCTIONS – Mellon Blue diamond nets USD $25.6 million, within estimate, highest jewellery lot sold at auction to date in 2025

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AUCTIONS – Mellon Blue diamond nets USD $25.6 million, within estimate, highest jewellery lot sold at auction to date in 2025

Image courtesy of Christie’s

GENEVA – Christie’s November 11 Magnificent Jewels sale achieved CHF60,621,805 | US$75,604,375, with sell through rates of 95% by value and 94% by lot. 

The Mellon Blue, a 9.51-carat fancy vivid blue diamond, led the sale, realising CHF20,525,000 | US$25,592,269, comfortably within its pre-sale estimate of USD $20-30 million, becoming Christie’s highest jewellery lot sold at auction to date in 2025, and the third highest price for any vivid blue diamond sold at Christie’s.

In addition, the sale was framed by three prominent private collections spanning over 150 years of connoisseurship – The Rainbow Collection, a Private JAR Collection, and a Splendid Casket of Ancestral Jewellery.

Max Fawcett, Global Head of Jewellery from January 2026, said, “This season’s Geneva Luxury Week reflects a market defined by confidence and discernment.

“The results to date speak to the enduring allure of jewels distinguished by exceptional provenance and rarity. Attractive estimates and a curated collection drove competitive bidding across platforms, reaffirming collectors’ appetite for rarity, quality, and craftsmanship.”

Christie’s Geneva Luxury Week live auctions at the Four Seasons Hotel des Bergues realised a combined total of CHF 82,263,240 | US$102,572,618, a 24% increase year-on-year.