Gold futures rapidly fell to six-week low declining below psychologically-significant level of USD 1,700 an ounce. The commodity price was mainly impacted by stronger greenback and concerns over the euro-zone's debt crisis. On the Comex division of the New York Mercantile Exchange, gold futures for delivery in February were traded at USD 1,663.75 a troy ounce at the morning US trade, losing 3% since opening.