The word flawless is often overused but the 84.37 carat diamond that Sotheby`s will auction off on November 14th in Geneva has earned the distinction. THe stone, a brilliant-cut, D-color, Flawless stone is the largest brilliant-cut diamond of top quality (the highest possible GIA rating) to ever appear at auction. The stone`s perfection makes it one for the history books and it has a price to match, it is estimated to sell for $12 to $16 million. The owner gets naming rights over the stone.