Botswana is home to the world's largest gem diamond mine and is the leading producer of diamonds by value. It possesses huge coal resources in the eastern part of the country, estimated at 17 billion tonnes. The quality of coal in these deposits is suitable for power generation. Nickel, cobalt, and soda ash production also play significant roles in the economy. Botswana’s geologic environment and mineral investment climate, political stability, and low tax rates make it an attractive destination for foreign mineral investment.