A Pear-shaped D-colour flawless 72.22 carat diamond is shown during a press preview at Sotheby's Auction House in New York, March 11, 2008. The diamond worth an estimated $10-13 million will be offered at auction by Sotheby's in Hong Kong on April 8, 2008, during its Magnificent Jewels and Jadeite Sale. REUTERS/Shannon Stapleton (UNITED STATES)