An auction house worker holds a ring with the ‘Sun Drop Diamond’, 110.03 carat pear-shaped Fancy Vivid Yellow diamond, which according to the house is the most impressive and largest diamond ever to come to auction, in London on Monday. Sotheby’s will hold its Autumn Sale of Magnificent Jewels on Nov. 15, 2011 and the diamond is estimated to fetch between11-15 million US dollars. (PTI)