Gem Diamonds Limited, together with its subsidiaries, operates diamond mines. The company's flagship project is the Let"eng mine located in the located in the Maluti Mountains of Lesotho. It is also involved in the production, manufacture, wholesale, retail, and marketing rough and polished diamonds. In addition, the company provides technical, financial, administrative, and management consulting services. It operates in Lesotho, Belgium, British Virgin Islands, South Africa, the United Kingdom, and Cyprus. Gem Diamonds Limited was incorporated in 2005 and is headquartered in London, the United Kingdom.