Rio Tinto readies to close world’s biggest diamond mine
The Argyle mine, in remote Western Australia, accounts for 90% of worldwide pink diamond production. (Image courtesy of Dan Nelson | Flickr.) Rio Tinto’s (ASX, LON, NYSE: RIO) iconic Argyle mine in remote Western Australia, the world’s biggest and the main global source of high-quality pink diamonds, will close in the fourth quarter this year, potentially pushing prices up and spurring exploration. The planned closure, the company said, will impact its total diamond output for the year. Rio now expects to produce between 12 and 14 million carats of rough diamonds in 2020, down…
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