Dollar hits highest level since 2010 NEW YORK, May 25 (UPI) -- Gold futures for June delivery were up 0.7 percent Friday to $1,568.90 per troy ounce on the Comex division of the New York Mercantile Exchange. Silver futures for July delivery were up 22.90 cents to $28.386 per troy ounce. The U.S. dollar rose to its highest level since 2010 on continued concerns about the eurozone. The dollar index rose to 82.416 from 82.342 on the International Exchange. The British pound was $1.5658 from $1.5665. The dollar was 1.0291 Canadian dollars from 1.0269 Canadian.