A blue diamond known as the Mellon Blue has been sold for 25 million at Christies in Geneva This 951-carat gem once owned by the renowned philanthropist Rachel Bunny Mellon exemplifies luxury with its internally flawless pear shape
A blue diamond known as the Mellon Blue has been sold for 25 million at Christies in Geneva This 951-carat gem once owned by the renowned philanthropist Rachel Bunny Mellon exemplifies luxury with its internally flawless pear shape