NEW YORK (MarketWatch) -- Gold futures rose 3% early Monday, getting a boost from the dollar's weakness against other major currencies. December gold rose $24 to $815.80 an ounce in electronic trading on Globex. Other metal futures also gained, with silver up 5% and copper up 7%. The dollar was lower against most major counterparts, overshadowed by heightened worries over the financial sector following the U.S. government's rescue of troubled banking giant Citigroup.