THE WINSTON BLUE – $23.8 MILLION
When it was bought by Harry Winston, Inc. (of The Swatch Group) from its anonymous previous owner for $23.8 million at Christie’s Geneva Magnificent Jewels sale, it was largest flawless vivid blue diamond. At 13.22 carat the $1.8003 million per carat was the highest for any blue diamond. It was known as just ‘The Blue’ during the auction, which was changed to the Winston Blue by Nayla Hayek, the CEO of the Harry Winston Inc. It is a type IIb diamond as certified by the Gemological Institute of America. On its either side is a pear-shaped diamond, weighing 1.00 and 0.96 carat respectively. This is one of the most flawless diamonds to have been sold by Christie’s, absolutely pure both internally and externally.
THE STEINMETZ PINK – $25 MILLIONS
Now known as the Pink Star, it weighs 59.60 carat and is rated Fancy Vivid Pink in color by the Geological Institute of America. It is the largest known diamond with this rating. Mined in the prodigal De Beers mines in 1999, it is a millennial. Because of its exceptionality, Steinmetz Diamonds belonging to the Benny Steinmetz group took 20 whole months to cut it. It publicly debuted in Monaco on 29 May 2003. It was bought in an Sotheby’s auction on 3 April 2017 by Chow Tai Fook Enterprises in Hong Kong for USD 71.2 millions.