Blue Diamond Sold for Over 25 Million Dollars - Legendary ‘Mellon Blue’ diamond sells for over $25 million at auction
A rare blue diamond, once owned by American socialite Rachel 'Bunny' Mellon, has fetched a high price at auction. The 'Mellon Blue' diamond sold for over $25 million at Christie's in Geneva on November 11, 2025. The diamond, named after its former owner, was sold by a Chinese collector. It joins the ranks of other famous blue diamonds, including the 'Oppenheimer Blue', which sold for a record-breaking $57.5 million in 2016. Bunny Mellon, known for redesigning the White House Rose Garden in 1961, had owned the diamond for many years before her death in 2014. The 'Mellon Blue' diamond's sale highlights the enduring appeal of rare blue diamonds. Its new owner, a Chinese collector, has added a significant piece to their collection, while the world watches as these precious stones continue to set records at auction.
