FILE - This May 6, 2015 file photo shows a Sotheby's employee wearing a ruby and diamond ring by Cartier, with a Burmese ruby weighing 25.59 carats, during a preview at the Sotheby's auction house in Geneva, Switzerland. The ring sold for $30.3 million at auction, Tuesday, May 12, setting a world auction record for any ruby and for any stone by Cartier, according to Sotheby's. (Martial Trezzini/Keystone via AP, File)