An exceptionally rare blue diamond went under the hammer in Geneva on Nov. 7, selling for more than $40 million, making it one of the most expensive diamonds ever sold at auction, Christie's said.
Bleu Royal Diamond Rakes In $44M at Christie's Geneva
Bleu Royal diamond, a gem at the top of its class, sells for
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Bleu Royal diamond rakes in nearly $44M at Geneva auction
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Blue diamond sells for more than $44 million at Christie's auction
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Blue Diamond “Bleu Royal” Sells for More Than $44 Million at Auction