The world’s biggest diamond mine is closing, which means gem prices are likely heading higher – by David Stringer and Thomas Biesheuvel (Bloomberg News/Finance – July 12, 2019)

https://business.financialpost.com/

Argyle is best known as the source of about 90 per cent of the world’s prized pink diamonds

The world’s biggest diamond mine ⁠— famed more for the fistful of coveted pink and red gems it yields each year than being a major producer of lower-quality stones — is being shuttered by Rio Tinto Group after almost four decades. Rivals from Russia to Canada hope that can help turn around the beleaguered industry.

Rio’s Argyle mine in remote Western Australia has transformed the sector since 1983 when the operation began supplying gems for both ends of the market. RBC Capital Markets and Panmure Gordon are among brokers, banks and competitors forecasting the closure could kick-start prices that have waned since 2011, according to PolishedPrices.com, an industry data provider.

Production at Argyle, about 2,600 kilometres (1,600 miles) northeast of the state capital Perth, is scheduled to end before the end of next year after finally exhausting its supply of economically viable stones, said Arnaud Soirat, Rio’s head of copper and diamonds.

“There is going to be a fair bit of supply which is going to come out of the market,” Soirat said in an interview Friday at the mine site. “In late 2020 we’ll be stopping operations and will start the rehabilitation of the site.”

Argyle is best known as the source of about 90 per cent of the world’s prized pink diamonds ⁠— rose-to-magenta hued stones that command among the sector’s highest prices.

For the rest of this article: https://business.financialpost.com/commodities/mining/the-worlds-biggest-diamond-mine-is-closing

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