Rio Tinto Takes Full Control of Canada’s Biggest Diamond Mine

The open pit stands at the Diavik Diamond Mine in the North Slave Region of the Northwest Territories, Canada.

Photographer: Ben Nelms/Bloomberg

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Rio Tinto Group has taken full control of Canada’s biggest diamond mine after agreeing to buy the stake previously owned by billionaire Dennis Washington.

Rio, which already owned 60% of the Diavik mine, said Thursday it had bought the share previously held by Dominion Diamond Mines. Dominion filed for insolvency protection in early 2020 as the pandemic brought the global diamond trade to a halt.