The Winston Blue

The Winston Blue is the moniker given to the largest flawless vivid blue diamond purchased by Harry Winston, Inc. (a wholly-owned subsidiary of The Swatch Group since January 2013) from an unidentified person on May 15, 2014, at Christie's Geneva Magnificent Jewels sale for $23.8 million. The 13.22-carat blue diamond set a world record price of about $1.8003 million per carat. In 2013, Harry Winston, Inc. purchased a 101.73-carat colorless diamond dubbed Winston Legacy at Christie's Geneva jewelry sale. The American luxury jeweler then paid $26.7 million ($254,400 per carat) for the colorless diamond, setting a world record for the highest price paid per carat for a colorless diamond.

The diamond was christened 'The Blue' at the auction. After it was purchased at auction, Nayla Hayek, CEO of Harry Winston Inc., gave it the moniker Winston Blue.

A pear-shaped diamond, weighing roughly 1.00 and 0.96 carats, flanks the diamond on either side. On March 25, 2014, the Gemological Institute of America verified that the diamond was fancy bright blue in color, flawless in clarity, and a Type IIb diamond.

Price: $23.8 million