A model displays the Sun-Drop diamond during a media preview in Geneva
A model displays the Sun-Drop diamond during a media preview in Geneva, November 9, 2011. The 110.03 carats diamond has been graded Fancy Vivid Yellow, the highest color grading for a yellow diamond. The diamond will be sold in auction at Sotheby's Geneva on November 15 and expected to fetch US$11-15 million. REUTERS/Michael Buholzer (SWITZERLAND - Tags: ENTERTAINMENT BUSINESS)