Fancy diamonds more popular than ever - Article Photos 1/14

This undated photo provided by Sotheby's shows a heart-shape yellow diamond that once belonged to the Duchess of Windsor, who wore it in a ring before it was made into this necklace. It is among a trove of jewels from the collections of Estee and Evelyn Lauder that will be auctioned to benefit breast cancer research on Dec. 5. AP Photo/Sotheby's - AP