Located a few miles South of Lake Argyle. A large diamond-bearing lamproite pipe discovered by Ashton Joint Venture in 1979. Open-pit mining began in 1985.
Argyle's production consists of 5% gem and 70% near-gem stones, with the remaining 25% being industrial diamonds. The mine also produces between 90% and 95% of the world's highly priced pink diamonds.
Further pipes ("Ellendale") are located NE of Argyle.
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