The Argyle Diamond Mine is one of the worlds largest suppliers of diamonds, producing approximately 20 million carats each year from its operations in the East Kimberley region, in the remote north of Western Aust......The Argyle Diamond Mine is one of the worlds largest suppliers of diamonds, producing approximately 20 million carats each year from its operations in the East Kimberley region, in the remote north of Western Australia. The Argyle Diamond Mines Joint Venture (ADMJV) was established in 1982 to own and finance the Argyle mine. The development and operation of the mine is governed by a State Agreement. Argyle Diamonds is 100 per cent owned and managed by Rio Tinto Limited. Argyle commenced mining its main ore body in 1985, and has since produced more than 760 million carats of diamonds.