A 100.5carat diamond was discovered by Gem Diamonds at its Letšeng mine in Lesotho, the company reported recently. The white, type IIa stone is the 11th over 100 carats the miner has recovered from the asset so far this year. The gemstone is estimated to sell at a very high price as a result of its colour, size, weight, shape and clarity. Gem Diamonds owns 70% of the Letšeng mine, with the state holding the remaining shares.
The Letšeng mine is located in the Maluti Mountains of Lesotho and is renowned for its recovery of bulky, high quality, exceptional Type II diamonds. Gem Diamonds acquired the mine in 2006 and has discovered more than sixty (60) diamonds of plus-minus 100 carats, predominantly high value, white diamonds. Amongst these diamonds recovered are the iconic 603 carat Lesotho Promise, the 550 carat Letšeng Star and the 493 carat Letšeng Legacy.
Letšeng has grown to be one of the largest open pit diamond mines in the world, processing ore from two kimberlite pipes. Some experts claim that the is the highest dollar-per-carat kimberlite diamond mine in the world.