The De Beers Millennium Jewel 4, an oval internally flawless fancy vivid blue diamond weighing 10.10 carats, which will lead Sotheby’s Hong Kong Spring Sales auction on 5 April 2016, has an estimate of between US$30 million and US$35 million. The diamond is the largest oval fancy vivid blue diamond ever to appear at auction and is being offered for sale from an Asian private collection.
The diamond was part of De Beers Millennium Jewels, an exceptional collection of rare and valuable diamonds showcased by De Beers together with The Steinmetz Group in a specially designed exhibit at London’s Millennium Dome to mark the millennium. Since their initial appearance at the Millennium Exhibition in 2000, only one of these diamonds have ever come into the open market, when Sotheby’s Hong Kong sold the ‘De Beers Millennium Jewel 11’, a 5.16-carat Internally Flawless Pear-shaped Fancy Vivid Blue Diamond, in April 2010.
