Gold futures on the COMEX division of the New York Mercantile Exchange Friday notched a third weekly gain in a row, settling at their highest level in a year with the dollar trading lower for the week.

The most active gold contract for December delivery went up 0.9 dollars, or 0.07 percent, to settle at 1,351.2 dollars per ounce.

The market followed through to the upside after yesterday's strong rally, making the former top at 1,353.00 dollars per ounce a new support level. The weaker U.S. dollar is helping to support dollar-denominated gold. Lower treasury yields are behind the weakness in the dollar.

The U.S. Dollar Index fell 0.4 percent to 91.337 as of GMT 1930, set for a weekly loss of 1.6 percent. That would be the biggest weekly decline since the past week of June. Gold and the dollar typically move in opposite directions, as gold priced in greenbacks is more attractive to investors using another currency.

As for other precious metals,silver for December delivery rose 0.7 cents, or 0.04 percent, to close at 18.123 dollars per ounce. Platinum for October delivery dropped 4.5 dollars, or 0.44 percent, to close at 1,012.3 dollars per ounce.