The Golden Jubilee Diamond

The Golden Jubilee Diamond is the largest cut and faceted diamond in the world. It weighs 545.67 carats (109.13 g).

First known as the “Unnamed Brown”, the Golden Jubilee Diamond was cut from a large brown diamond of 755.5 carats (151 g), found in the prolific blue ground of the Premier Mine in South Africa in 1985.

Until 1990, the diamond remained largely unknown to the outside world, requiring two years work to bring it to its current state.  In 1990, after two years of work, the stone was finished, reduced in total from 755.50 carats, to 545.65 carats. Gabi Tolkowsky (the man who cut the diamond) described the cut as a “Fire-Rose cushion shape.”

The Golden Jubilee was purchased from De Beers by a group of Thai business people led by Henry Ho in 1995.

It was arranged for the diamond to be given to King Bhumibol as a gift from the people to celebrate the 50th anniversary of the King’s ascent to the throne. The diamond was named the Golden Jubilee, and was received by the King’s daughter, Princess Matia Chari Sirindhom, on his behalf in 2000.

The diamond is now on display in the Royal Museum at Pimammek Golden Temple Throne Hall in Bangkok as part of the crown jewels

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