FILE- This Oct. 25, 2010, file photo, shows an employee of Sotheby's auction house holding a 24.78 carat fancy intense pink diamond mounted as a ring, that was last seen on the market some 60 years ago according to the house, ahead of an auction in central London. In November 2010, a rare pink diamond smashed the world record for a jewel at auction, selling for more than $46 million to a well-known gem dealer. London jeweler Laurence Graff paid $46,158,674, for the 24.78-carat "fancy intense pink" diamond, which he immediately named "The Graff Pink." (AP Photo/Lefteris Pitarakis, File)

Associated Press
FILE- This Oct. 25, 2010, file photo, shows an employee of Sotheby's auction house holding a 24.78 carat fancy intense pink diamond mounted as a ring, that was last seen on  the market some 60 years ago according to the house, ahead of an auction in central London. In November 2010, a rare pink diamond smashed the world record for a jewel at auction, selling for more than $46 million to a well-known gem dealer. London jeweler Laurence Graff paid $46,158,674, for the 24.78-carat "fancy intense pink" diamond, which he immediately named "The Graff Pink."  (AP Photo/Lefteris Pitarakis, File)
FILE- This Oct. 25, 2010, file photo, shows an employee of Sotheby's auction house holding a 24.78 carat fancy intense pink diamond mounted as a ring, that was last seen on the market some 60 years ago according to the house, ahead of an auction in central London. In November 2010, a rare pink diamond smashed the world record for a jewel at auction, selling for more than $46 million to a well-known gem dealer. London jeweler Laurence Graff paid $46,158,674, for the 24.78-carat "fancy intense pink" diamond, which he immediately named "The Graff Pink." (AP Photo/Lefteris Pitarakis, File)
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