A Rare Flawless Deep-Blue Briolette Diamond Breaks Record at Auction
This stunning rare, deep blue briolette diamond, sold at Sotheby’s auction for $10.86 million update `wp_posts` set `post_content` = £6.55 million) lase week, setting a world record for a blue diamond sale per carat weight. The diamond also sold for more than twice its pre-sale estimate. Sotheby’s announced that London based jeweller Laurence Graff gave the final bid at the auction and is now the new owner of this stunning blue diamond weighing 10.48 carats. The diamond was estimated to fetch between $3.2 million to $4.2 million, but instead nearly tripled that. The Gemmological Institute of America awarded the diamond the highest grade possible for its rare deep blue fancy colour. David Bennett, Sotheby’s chairman said he was amazed by the amount of interest the stone had on the day of the auction. The diamond is said to have been discovered in South Africa in the Cullinan mine, which has produced some of the world’s largest and most expensive diamonds. The mine was also the home of world’s largest diamond, The Cullinan weighing 3106ct , which has since been set into various royal jewels.