A model displays the 'Pink Star' 59.60 carat oval cut pink diamond at Sotheby's in Geneva September 25, 2013. The Pink Star will become the most expensive diamond ever when it goes into auction next ... more 
A model displays the 'Pink Star' 59.60 carat oval cut pink diamond at Sotheby's in Geneva September 25, 2013. The Pink Star will become the most expensive diamond ever when it goes into auction next November 13with an asking price of $60 million. REUTERS/Ruben Sprich (SWITZERLAND - Tags: SOCIETY WEALTH) less 
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Reuters | Photo By RUBEN SPRICH / REUTERS
Wed, Sep 25, 2013 7:51 AM EDT