Weaker dollar props up metals Thursday NEW YORK, Jan. 10 (UPI) -- The price of gold rose Thursday in New York with help from a sharply lower U.S. dollar. Gold prices gained $17.40 after a five-day losing streak, reaching $1,674.40 per troy ounce on the Comex division of the New York Mercantile Exchange. Silver added 46 cents to $30.82 per ounce. The dollar index, which measures the U.S. dollar against six other major currencies on a pro-rated scale, declined 1.08 percent to 79.74 on the International Exchange.