Christie's New York Displays the Largest Flawless Fancy Vivid Blue Diamond Ever to Appear at Auction.
Description:It's been described as 'blue perfection' by jewelry experts. And it's just as expensive as it is beautiful. Pegged at $21 to $25 million (USD) it leads the upcoming Christie's Magnificent Jewels sale in Geneva. Rahul Kadakia, the Head of Jewelry for Christie's Americas & Switzerland, says what makes this stone special, is that blue diamonds are very rare, accounting for less than two percent of world diamond production.(1:13)