FILE PHOTO: A model displays a Rare Fancy Vivid Blue Diamond during an auction preview at Sotheby’s in Geneva May 6, 2009. The diamond was found in 2008 in the historic Cullinan mine in South Africa. REUTERS/Denis Balibouse/File Photo
FILE PHOTO: A model displays a Rare Fancy Vivid Blue Diamond during an auction preview at Sotheby’s in Geneva May 6, 2009. The diamond was found in 2008 in the historic Cullinan mine in South Africa. REUTERS/Denis Balibouse/File Photo