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[…]
‘The Mellon Blue’ Diamond Set to Shine at Christie’s Geneva Auction
Christie’s is preparing to present one of the most important diamonds to appear at auction in recent[…]