The diamond was now more than lighter and was renamed the Wittelsbach-Graff Diamond.
It sold to Lawrence Graff of Graff Diamonds, who sold it to famed author Danielle Steele.
In 1962, Lawrence Graff of Wittelsbach-Graff Diamond fame, opened the first retail jewellery store here.
The previous record was held by Gem Diamonds'Leseli La Letaeng, which was bought for $ 18.4m by Graff Diamonds in December 2008.
In July 1993 thieves stole ? million worth of gems belonging to the jewellers Graff Diamonds-it was London's biggest gem heist of modern times.
You'll find a Laurence Graff diamond necklace that includes a flawless 70.39-carat hunk of pink ice that you can add to your goodies for $ 10million.
On 6 August 2009 at 4.40 pm, two sharply dressed men arrived at the Graff Diamonds jewellery store by taxi and once inside produced two handguns which they used to threaten staff.
The hotel will feature an upscale restaurant open to the public, stores including jeweler Graff Diamonds and a Waldorf Astoria Spa as well as meeting space and a ballroom that will hold up to 200 people.
Since none of the stolen jewellery was recovered as of March 2011, Graff Diamonds, owned by the billionaire Laurence Graff, lost more than US $ 10 million ( ?.6 million ) as a result of the robbery.