A Sotheby's employee holds the largest brilliant-cut D-color flawless diamond during a preview at Sotheby's in Geneva, Switzerland, Monday, Oct. 1, 2007. The 84.37-carat white diamond touted by Sotheby's for its unprecedented size and beauty could beat the record for the most expensive jewel ever sold when it is put up for auction Wednesday evening, Nov 14, 2007. Sotheby's has estimated the largest top quality, brilliant-cut white diamond ever to appear in an auction at US$12 million (euro 8.2 million) to US$16 million (euro 11 million). [Agencies]