Record: The Largest-Faceted Diamond Ever Cut
In 1985, a worker at the Premier mine of South Africa discovered a large brown diamond the size of 755.5 carats (151 g.) It was one of the largest diamonds ever unearthed, but was initially considered something of an ugly duckling. It even had the nickname of “Unnamed Brown.” The diamond was cut over a period of two years in a specially designed underground room free from vibrations. When completed, it weighed 545.67 carats (109.13 g), which made it the largest cut diamond ever.
After the stone was cut, it turned into a beautiful yellow-brown diamond. In 1994, the diamond was displayed in Thailand and purchased by a group of investors, led by Henry Ho of Thailand. The Golden Jubilee Diamond is currently located in the Royal Thai Palace, as part of its crown jewels. It has been estimated to be worth USD $4-12 million.