The Argyle diamond mine is a diamond mine located in the Kimberley region of Western Australia. The Argyle mine is the largest diamond producer in the world by volume, although due to the low proportion of gem-quality diamonds, is not the leader by value. It is the only known significant source of pink diamonds, producing 90 to 95% of the world's supply.
The Argyle diamond mine is also notable for being the first successful commercial diamond mine exploiting a volcanic pipe of lamproite, rather than the more usual kimberlite pipe. Much earlier commercial attempts to mine diamonds from a lamproite pipe in Arkansas in the southern United States were unsuccessful; the lamproite pipe there is now contained within the Crater of Diamonds State Park. The Argyle mine is owned by the Rio Tinto Group, a diversified mining company which also owns the Diavik Diamond Mine in Canada and the Murowa diamond mine in Zimbabwe.