The Golden Jubilee is the largest faceted diamond in the world, weighing 545.67 carats in which a yellow-brown cushion shape diamond is now the Crown Jewels of Thailand, The original stone weighted 755.50 carats and then was designed by master cutter Gabi Tolkowsky (He also designed the 278.85 -carat Centenary Diamond, which is the largest D-Flawless diamond in the world.) who took three years to complete its transformation into the world's largest fancy diamond.
The result was that the cutter could preserve the greatest possible amount of the weight of the rough diamond in which he was losing diamond less then 28 percent. Tolkowsky described the Golden Jubilee's cut as a "fire rose cushion cut." The color has been graded as "fancy yellow-brown" by GIA Lab.
The Golden Jubilee is known to have been purchased from De Beers by a Thai syndicate in 1995. The diamond was then given to King Rama IX of Thailand in 1997 for his Golden Jubilee - the 50th anniversary of his coronation. King Rama IX had the Golden Jubilee mounted in his royal scepter. Prior to this event, the stone was simply known as the Unnamed Brown in which was found at the Premier mine, South Africa in 1986.
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