A pear-shaped 72.22-carat diamond is held up by Amanda Nicodemus, of Sotheby's, right, during a press preview Monday March 10, 2008 at Sotheby's in New York. The D-color, flawless diamond is expected to bring up to $13 million when it goes on the auction block April 10 at Sotheby's Hong Kong galleries. [Agencies]