Silver prices settled 40 cents higher to $19.18 while copper ended down 2 cents at $2.88 weighed down by the World Bank's prediction that China's economy could slow this year and next after popping 11.9% in the first quarter of 2010. China has been credited with jump-starting the global economic recovery and investor fear that any tightening in spending will hurt demand for base metals used in construction. Gold mining stocks, a more risky and more profitable way to invest in gold, were rising. Agnico-Eagle ( AEM) was adding 2.06% to $64.97 while Eldorado Gold ( EGO) was slipping slightly to $18.12. Other gold miners New Gold ( NGD) and NovaGold ( NG) were trading at $6.67 and $7.44, respectively.