The world's second biggest diamond is also a big disappointment -- at least on the auction block.
Sotheby's failed to find a buyer for the 1,109-carat uncut stone, dubbed the Lesedi La Rona, which had been expected to fetch at least $70 million.
Although there were some bidders at the Wednesday evening auction in London, none of them met the undisclosed minimum price set by the seller, Lucara Diamond Corp (LUCRF).
"Every aspect of tonight's auction was unprecedented," Sotheby's (BID) said in a statement: "No one alive today has ever seen a gem-quality rough diamond of this incredible scale, and no diamond -- polished or rough -- has ever been estimated at this price level."
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