Lukson unveils its Mixed Metal Men’s Collection ahead of International Men’s Day
November 13, 2025
South Africa’s TFG unveils 1896, a bold new era of African fine jewellery
November 13, 2025Mellon Blue diamond sells for $25.6 million at Christie’s in Geneva
The Mellon Blue, a 9.51-carat fancy vivid blue diamond formerly owned by the US art collector Bunny Mellon, sold for $25.6 million at auction on Tuesday. The diamond was sold by auctioneers Christie’s in Geneva as part of its Magnificent Jewels sale in the Swiss city. The gem sold for 20,525,000 Swiss francs at the Hotel des Bergues, having been estimated to fetch between 16 and 24 million francs.
Rahul Kadakia, who conducted the sale, said the price was evidence of the “elite appetite amongst collectors for extraordinary and storied gems”. The stone, set in a serpentine ring, once belonged to Rachel Lambert Mellon, better known as Bunny Mellon, a US horticulturalist, philanthropist and art collector.
The Mellon Blue is an outstanding stone. More than that, though, it has also become symbolic of a lifestyle of a bygone era — the type only possible with a Gilded Age fortune. The brilliant-cut stone is graded as internally flawless. The diamond was last seen publicly in 2014, when it was auctioned in New York after her death at the age of 103, selling for more than $32 million.
