Christie’s auctioned a fancy vivid blue diamond known as the Oppenheimer Blue for a record $58.2 million on Wednesday. The buyer was not identified.

The 14.62-carat stone, billed as the largest vivid blue diamond ever to be sold at auction, rounded out a two-day run of jewelry auctions in Geneva. The price had been estimated at $46 million.

The rectangular-cut diamond has been set in a ring and flanked by two smaller trapeze-shaped diamonds.

The diamond got its name from the late Sir Philip Oppenheimer, who long oversaw De Beers mining. Rival Sotheby’s on Tuesday sold the Unique Pink diamond for $31.4 million to an unidentified buyer from Asia in an auction that reaped more than $175 million.

Associated Press