CHICAGO, May 30 (Xinhua) -- Gold futures on the COMEX division of the New York Mercantile Exchange rose slightly on Wednesday, as the U.S dollar became weakened.

The most active gold contract for August delivery went up 2.4 dollars, or 0.18 percent, to close at 1,306.5 dollars per ounce.

The U.S. dollar index, which measures the buck against six rivals, went down 0.69 percent to 94.20 as of 1915 GMT .

Gold and the dollar typically move in opposite directions, which means if the dollar goes down, gold futures will rise.

As for other precious metals, silver for July delivery added 17.1 cents, or 1.04 percent, to settle at 16.373 dollars per ounce. Platinum for July went up 2.6 dollars, or 0.29 percent, to close at 908.5 dollars per ounce.