There are a limited number of commercially aviable diamond mines currently operating in the world, with the 50 largest mines accounting for approximately 90% of global supply. Diamonds are also mined alluvially over disperse areas, where diamonds have been eroded out of the ground, deposited, and concentrated by water or weather action.
Diamonds Are Forever? As the largest producer of diamonds in the world, diamond mining in Africa is woven into the history of the continent. At once the source of immense wealth, and extreme poverty, the history of diamond mining and the future of the diamond mining industry in Africa is a hot topic around the world.
Jwaneng diamond mine in African country Botswana ranks as the eighth biggest diamond mine in the world. The open-pit mine located 160 miles south-west of Gaborone in south central Botswana was estimated to contain diamond reserves of 88.3Mct (70.1Mt grading 1.26ct/t diamond) as of December 2012.