The 17.61 carat, pear-shaped Bleu Royal diamond, set in a ring, fetched $43.8 million, they said. It is the "largest internally flawless fancy vivid blue gem" ever to appear for sale in auction ...

A 17.97-carat Burmese ruby ring, estimated to sell for $5.5M, will be a highlight at The Geneva Jewels Auction: Three on ...