November 2010: The Graff Pink, a 24.78-carat "fancy intense pink" stone described as "one of the greatest diamonds ever discovered", auctioned for $46.2m (£29m).
It sold for $83m in Geneva in 2013 but the buyer later defaulted.
The auction house wrote "a new chapter in its story by offering it for sale in Hong Kong, now a global epicenter for the world's wealthy", said Tobias Kormind of 77 Diamonds, an online diamond jewelry seller.
"Sotheby s Hong Kong is very proud to have this record", its Asia chairman Patti Wong told AFP, adding this was a new world auction record for any type of jewel.
Brady's missing Super Bowl jerseys tracked to Mexico
Police also located a Brady jersey that had gone missing after the Patriots' 2015 Super Bowl win over the Seattle Seahawks. Mexican authorities said they will not charge Ortega because the alleged crime occurred in the United States.
The previous recoed was helf by the Oppenheimer Blue, which sold for $50 million last May.
Originally a 132.5 carat rough diamond, the Pink Star took two years to cut and polish after being mined in Botswana by De Beers in 1999.
The auction house was forced to buy the diamond from the seller because it had guaranteed a $60 million sale price.
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