Rare ‘Mellon Blue’ Diamond Fetches $25.5 Million at Christie’s Geneva Market Reflects Shifting Demand for Coloured Diamonds
The legendary Mellon Blue Diamond a 9.51-carat fancy vivid blue, internally flawless gem sold for $25.5 million[…]
Rare 10.3-Carat ‘Mediterranean Blue’ Diamond Sells for $21.5 Million at Sotheby’s Geneva Auction
rare 10.3-carat fancy vivid blue diamond, known as The Mediterranean Blue, has sold for an astonishing[…]