An extremely rare 15.38 carat pear-shaped pink diamond -- called the 'Unique Pink' -- sold for $36.1 million at Sotheby's in Geneva on Tuesday, making it the most expensive fancy vivid pink diamond ever to sell at auction.
An extremely rare 15.38 carat pear-shaped pink diamond -- called the 'Unique Pink' -- sold for $36.1 million at Sotheby's in Geneva on Tuesday, making it the most expensive fancy vivid pink diamond ever to sell at auction.