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World's Most Expensive Rough Diamond Sells for $63 Million

  • 813-carat diamond recovered by Lucara in Botswana last year
  • Lucara's 1,109-carat stone, second biggest yet, still to sell
Guards stand next to the 1109-carat rough Lesedi La Rona diamond at Sotheby's in New York, on May 4, 2016.

Guards stand next to the 1109-carat rough Lesedi La Rona diamond at Sotheby's in New York, on May 4, 2016.

Photographer: Spencer Platt/Getty Images
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Lucara Diamond Corp. sold an 813-carat jewel for $63 million, making it the most expensive rough gem on record and raising the prospects for the sale of the Lesedi la Rona, the world’s second-biggest such stone that was unearthed last year.

The sale of The Constellation was worth $77,649 a carat and Lucara will retain a 10 percent interest in the net profit received in the polished products, the Vancouver-based company said in a statement Monday. The stone was bought by Nemesis International DMCC, a Dubai-based rough-diamond trading company.