UPDATE 1-Giant Lucara diamond fails to sell at Sotheby's auction
June 29, 2016 at 15:18 PM EDT
June 29 (Reuters) - Lucara Diamond Corp's giant Lesedi la Rona gem, the biggest uncut diamond to be discovered in over a century, failed to sell at a Sotheby's auction in London on Wednesday after bids fell short of the minimum reserve price, the company said.