UPDATE 1-'Raj Pink' diamond, top gems, fail to sell at Sotheby's sale By: Reuters: Company News November 15, 2017 at 19:11 PM EST * Laurence Graff buys diamond earrings, emerald necklace (Adds Sotheby's statement, names Graff as buyer in paragraphs 8 and 10) Read More >> Related Stocks: Sotheby's Holdings