At the auction, Sotheby's sold a unique diamond
 

12/05/2010
 At jewelry auction in Geneva with a hammer left a unique gem - the blue diamond weighing 7.4 carats. The name of the treasures of the lucky owner is unknown, but reported that the right to possess the stone cost him nearly eight million dollars.

At a Tuesday night auction jewelry house Sotheby's huge blue diamond was the top lot. Since these stones rarely appear in the sale, at the time of the auction unfolded serious struggle.
Recall that a year ago at Sotheby's in Geneva for nine million dollars was sold to a rare blue diamond weighing 7 carats. He was found at a mine in South Africa, and its weight was cut to 26.58 carats. This precious stone set a world record price in terms of carats - more than a million each.