Located in the East Kimberley region in the remote north of Western Australia, the Argyle Diamond Mine is the world's largest supplier of diamonds, producing approximately 20 million carats each year. The Argyle Diamond Mine's production accounts for approximately one-fifth of the world's natural diamond production.

Argyle operates an open pit mine to recover diamonds from the site's AK1 lamproite pipe. An underground mine is currently in construction, projected for completion in 2010.

The diamonds recovered at Argyle are sorted and prepared for international sale by Rio Tinto Diamonds' sales and marketing team in Antwerp, Belgium. The majority of customers for the non-pink Argyle product are based in India where a Rio Tinto Diamonds representative office is located in Mumbai. Argyle's polished pink diamonds are sold to an international customer base comprising traders, jewellery manufacturers, jewellery designers and luxury retailers.