Weighing in at 18.96 carats, the Pink Legacy diamond will be the larges Fancy Vivid pink diamond ever offered at auction by Christie's when it comes up for sale on November 13, 2018 in Geneva. Graded Type IIa, a classification earned by less than 2% of diamonds, and boasting a colour and clarity typically only seen in diamonds weighing less than a carat, the Pink Legacy is descended from the Oppenheimer family and valued in the region of $30 to 50 million. The closest comparison seen at auction is the Pink Promise - a 14.93 carat Fancy Vivid pink diamond which sold at Christie's for $32.48 million in 2017.