The Letšeng Diamond Mine, found in the landlocked Southern African kingdom of Lesotho, is owned by Gem Diamonds, Ltd. and the government of Lesotho, and at an elevation of 3,100 m it is the world's highest diamond mine.
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Address Letseng-la-Terae, Lesotho
Coordinates -29°0'21.89" N 28°51'53.46" E