Pre-Auction Analysis: Christie’s and Sotheby’s Fancy Color Diamond Lots
According to our Rarity Evaluator, a stone with these gemological characteristics comes to the market once every few years and receives the “one of a kind” grade
Sotheby’s Geneva Auction
Pre-Auction Impressions: November 11th 2015, Sotheby’s Geneva
On November 11th, Sotheby’s will feature ‘The Blue Moon’, a 12.03 ct, cushion cut, Fancy Vivid Blue, IF diamond. Only once every three or four years do we see an important blue stone of this caliber at auction. The high estimate is $4.5 million per carat.