The Winston Blue

An exceptionally rare blue diamond went under the hammer in Geneva on Nov. 7, selling for more than $40 million, making it one of the most expensive diamonds ever sold at auction, Christie's said.

Weighing 17.61 carats, the Bleu Royal is the largest internally flawless fancy vivid blue gem ever to appear for sale in auction history.

An exceptionally rare 19-carat pink diamond goes under the hammer in Geneva Tuesday, when it could fetch $50 million (44 million euros), setting a new record for a stone of its kind, reports AFP. 

The Pink Legacy used to belong to the Oppenheimer family, which for decades ran the De Beers diamond mining company, but auction house Christie's refused to say who the current owner was.

A rare blue diamond has sold in Geneva for just over $17 million, as Sotheby’s eyed total sales in excess of $100 million at the autumn jewel auctions.

A sapphire known as the Blue Belle of Asia has set a new world record after selling for more than 17 million dollars at a rare jewellery auction in Geneva, Christie's said.
     
The 392.52-carat gem was snapped up by a private collector Tuesday night for 16.965 million Swiss Francs ($17.29 million, 13.87 million euros), the highest ever for a sapphire at auction.