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What is the world biggest diamond?

The largest cut diamond today is a yellow-brown stone called "Golden Jubilee". The carat weight of the diamond that has the shape of an oval cushion, is 545.67 ct. Diamond was cut from a 755-carat rough stone that was discovered in the Premier mine in South Africa in 1985. Diamond cut was made under the direction of Gabriel Tolkowski from 1988 to 1990. The name was given to the diamond in 1995, when it was presented to the king of Thailand, Rama IX, in honor of the 50th anniversary of the coronation. Currently, this largest cut diamond is exhibited in the Golden Temple in the Royal Museum (Bangkok).