"Blue Moon Diamond" sells for world record $48.4 million - Sotheby's

By Stephanie Nebehay GENEVA (Reuters) - The rare and flawless "Blue Moon Diamond" sold for 48.6 million Swiss francs ($48.4 million) to a Hong Kong buyer on Wednesday, setting a world record for a gemstone at auction, Sotheby's said. "It is a new record price for any gemstone and per carat," David Bennett, worldwide chairman of Sotheby's international jewellery division, told a packed showroom in Geneva that erupted into applause. The Hong Kong buyer promptly renamed it "The Blue Moon of Josephi