A 102.39 carat D Flawless oval diamond auctioned by Sotheby’s Hong Kong has sold for what experts call a ‘bargain price’ of US$15.7 million. The sale has broken the world record for the highest value ever bid for a jewel in an online auction. The highest price previously paid for a jewel in an online auction was $2.1 million at Christie’s in July for a 28.86 carat diamond. The 102.39-carat diamond sold by Sotheby’s is described...