“Oppenheimer Blue” Diamond Hammered for $57.5-M at Christie’s

“Oppenheimer Blue” Diamond Hammered for $57.5-M at Christie’s






“Oppenheimer Blue” Diamond Hammered for $57.5-M at Christie’s A 14.6-carat blue diamond auctioned at Christie’s in Geneva for $57.5-M, including fees, becoming the most expensive diamond ever auctioned. Christie’s amended the final sale price late Wednesday night. The stone, called the “Oppenheimer Blue,” followed a record-high jewelry sale by Sotheby’s (NYSE:BID) Tuesday, which totaled $175-M, the […]