Mon, 23 May 2022

World's largest blue diamond sells for $57 million

Robert Besser
01 May 2022, 14:11 GMT+10

HONG KONG: The world's largest blue diamond, the 15.10-carat "De Beers Cullinan Blue," sold for $57.5 million during an auction at Sotheby's in Hong Kong last week.

The unique diamond was expected to sell for about $48 million, but an anonymous buyer bought it via telephone after an eight-minute bidding war among four potential buyers.

In a statement, Sotheby's noted that since the diamond was found in South Africa's Cullinan mine in 2021, it has been ranked among the highest ratings used to assess colored diamonds.

The Gemological Institute of America (GIA) categorized the jewel as "fancy vivid blue," the top color grading of its class.

In a statement, Sotheby's said, "Blue diamonds of this importance are exceptionally rare, with only five examples over 10 carats ever having come to auction, none of which have exceeded 15 carats, making the appearance of this flawless gem a landmark event in itself."

Even with a final price of $57,471,960, it is still not the most expensive blue diamond ever to sell at auction, which is the 14.62-carat "Oppenheimer Blue" sold in 2016 for $57,541,779.

"It is truly a once-in-a-generation stone, and quite simply the greatest blue diamond of its size I have ever seen," Patti Wong, chairman of Sotheby's Asia, said in a statement.

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