FILE - In this April 29, 2014 file picture a Christie's employee holds a pear shaped D colour flawless 75.97 carat diamond at the auction house in London. The stone will be sold at auction in Geneva ... more 
FILE - In this April 29, 2014 file picture a Christie's employee holds a pear shaped D colour flawless 75.97 carat diamond at the auction house in London. The stone will be sold at auction in Geneva on Wednesday evening May 14, 2014 with an estimated value of US$ 13.5-15.5 million. (AP Photo/Alastair Grant,file) less 
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Associated Press | Photo By Alastair Grant,file
Wed, May 14, 2014 12:51 PM EDT