Gold is dusting off its credentials as the go-to commodity in troubled times and its producers are reaping the benefits.

Futures rallied above US$1,100 an ounce to a two-month high, after a sell-off in Chinese shares forced the country's stock exchanges to shut twice this week, spurring demand for a haven.

Global markets are facing a crisis and investors need to be very cautious, said billionaire George Soros.

Shares of bullion miners including Barrick Gold are climbing, even as the 80-member Bloomberg World Mining Index slides to the lowest in more than a decade.


"You are seeing a flight to safety which is causing the price of the metal to improve which is then flowing into the stocks," said Josh Wolfson, an analyst at Dundee Securities.

"Certainly I would expect the price of the metal to outperform. However, outperform doesn't necessarily imply a positive return."

After posting three straight annual declines, bullion is topping other commodities this month amid weakness in China's currency and stock market and geopolitical tensions in the Middle East and North Korea.

Soros told a forum in Colombo, Sri Lanka, that China is struggling to find a new growth model and its currency devaluation is transferring problems to the rest of the world.

The current environment "reminds me of the crisis we had in 2008", Soros said. Bullion futures rose 5.5 per cent that year, at the start of the global financial crisis, then rallied 24 per cent in 2009 and 30 per cent the following year.

Gold futures for delivery in February gained 1.5 per cent to settle at US$1,107.80 during trading on the Comex in New York, after reaching US$1,109.30. Prices are up for a fifth session, the longest run since October.

Most of the 22 raw materials in the Bloomberg Commodity Index are down this year. A gauge of industrial metals fell to the lowest in more than a decade, while oil prices have dropped to the lowest in 12 years.

While the Bloomberg World Mining Index slumped to the lowest since 2004, gold miners are bucking the trend, with Gold Fields climbing as much as 8.5 per cent in Johannesburg, while Barrick rallied to the highest since July in Toronto.


"It's really the producers that people are looking at," said Kerry Smith, an analyst at Haywood Securities.

"Given that the markets are so choppy and weak, I would have thought it would have been more of a safe haven trade."

"It's all about China and turmoil in the global markets," said Robin Bhar, a London-based analyst at Societe Generale.

"China devaluing the yuan has stoked fear over the weakness of the global economy and that's good for gold."

Silver futures also gained on the Comex. Platinum rose on the New York Mercantile Exchange, while palladium fell.