Anglo American is one of the world’s largest diversified mining groups. Our unique portfolio of high quality mining assets and natural resources includes precious, base metals and bulk commodities. Anglo operates in Africa, Europe, South and North America, Australia and Asia.
Key Facts:
Anglo American is headquartered in London, United Kingdom and operates in 45 countries.

Diamond operations
Anglo’s platinum and diamond assets set them apart from their competitors. Anglo American's subsidiary, Anglo Platinum, is the world’s largest platinum producer and Anglo American owns 45% of De Beers, the world’s leading diamond exploration, mining and marketing company. 
Anglo Platinum, a managed subsidiary, owns the largest platinum reserves in the world and it's the largest producer, generating some 39% of the world’s newly mined platinum output. Anglo mines, processes and refines the full range of platinum group metals. 
Independently-managed De Beers is the world’s leading diamond exploration, mining and marketing company. De Beers generates about 40% (by value) of global rough diamond production, primarily in South Africa, Botswana, Namibia and Tanzania. 

Official website of the company: http://www.angloamerican.co.uk/