|The “Cullinan Dream,” the largest fancy intense blue diamond ever offered at auction brought $ 25m at Christie’s New York Magnificent Jewels sale on June 9. The 24.18-carat cut-cornered rectangular mixed-cut gem had an estimate of $23 to $29 million.|
The diamond is nearly 10 carats larger than the 14.62-carat “Oppenheimer Blue,” which sold for a world auction record of $57.5 million. The Cullinan Dream has a VS2 clarity grade (very slightly included with inclusions observed with effort under 10x magnification), two grades below flawless. The Cullinan Dream is the largest of four blue diamonds cut from a 122.52-carat rough diamond discovered in 2014 at the Cullinan mine, famous for the 530.20 Cullinan I, the largest polished white diamond known and part of the British Crown Jewels.
The Cullinan mine has been associated with many significant blue and pink diamonds to come to market, including the 10.1-carat “De Beers Millennium Jewel 4,” that sold for $31.8 million, and the 12.03-carat “Blue Moon” that sold for $48.4 million.
The 'Oppenheimer Blue'
|The price is much lower than the $3.9m per carat achieved by the Oppenheimer Blue in May 2016, which set the mark as the most expensive diamond ever sold at auction, or the $4.02m per carat achieved by the Blue Moon of Josephine in November 2015.|