The Oppenheimer Blue
On the 18th of May 2016, a 14.62-carat diamond, the Oppenheimer Blue, sold for the world record-breaking amount of $58 million at auction.
Rahul Kadakia, Christie’s International Head of Jewellery, was present at the auction held at the Four Seasons Hotel des Bergues in Geneva and said the bidding war lasted well over 20 minutes. But one diamond fetched even more than that.