The 1109-carat rough Lesedi La Rona diamond, the biggest rough diamond discovered in more than a century, sits in a display case at Sotheby's on May 4, 2016 in New York City.Spencer Platt/Getty Images
Lucara Diamond Corp. says it has sold one of the biggest diamonds ever found for $63.1-million (U.S.).
Company president William Lamb says in a statement that the price was the highest ever paid for a rough diamond.
Lamb adds that the 813 carat diamond, called Constellation, is also the sixth-largest gem-quality diamond ever found.
The Vancouver-based company didn't disclose the buyer but said it will also get 10 per cent of the profit from the polished stones cut from the rough diamond.
Lucara recovered the diamond from the same mine in Botswana where it also found the 1,109-carat Lesedi La Rona diamond that ranks as the second-largest ever discovered.
Sotheby's is set to auction the Lesedi La Rona diamond on June 29, with estimates that it could sell for $70-million.