76-carat diamond nets a record $21.5M

This Nov. 9, 2011, photo, shows a model displaying a 110.03 carats Sun-Drop Diamond of South Africa described as fancy vivid yellow, the highest color grading by gemstone experts at a Sotheby's preview show in Geneva, Switzerland. In November 2011, the Sun-Drop Diamond was sold for more than $10.9 million at auction, beating previous records for a jewel of its type.

Credit: AP Photo/Anja Niedringhaus