Firestone Diamonds plc, the AIM-quoted diamond mining and exploration company, is responsible for financing, construction and operation of the plant. Firestone Diamonds plc is an international diamond mining and exploration company with operations in Botswana and South Africa.  Botswana is the world’s largest and lowest cost producer of diamonds, with annual production worth over $2.5 billion, and is considered to be one of the most prospective countries in the world to explore for diamonds. Firestone is the largest holder of mineral rights in Botswana’s diamondiferous kimberlite fields, controlling over 25,000 square kilometres around the major Orapa and Jwaneng mines and the entire Tsabong kimberlite field.  Firestone has 103 kimberlites in its portfolio, of which BK11 is about to commence production, and 29 others have been proven to be diamondiferous.