Botswana
Botswana's economy comes mostly from mining. This includes diamonds, metals (including copper) and minerals (including salt). Botswana is the highest producer of diamonds by value in the world. In 1999, Botswana produced over 30 million carats (6,000 kg) of diamonds from the three Debswana mines. That is about 25% of worldwide production.  There has been an agreement with De Beers since 1969.  In 2023 a new agreement was made giving the country more of the diamonds - 30% in 2023, 40% from 2028 and 50% from 2033.