Gold futures on the COMEX division of the New York Mercantile Exchange rose on Tuesday, as a weakening U.S. dollar helped pull the precious metal off a one-week low.

The most active gold contract for December delivery rose four dollars, or 0.31 percent, to settle at 1282.90 dollars per ounce.

The U.S. dollar index, which measures the buck against six other major currencies, eased by nearly 0.8 percent to 93.786. A weaker dollar boosts gold as the falling currency makes the dollar-priced bullion more attractive to investors using another currency.

Uncertainty over the outlook for U.S. tax reform and its potential impact in supercharging the economy also supported the metal's move higher, hitting investor risk appetite and underpinning gold's value as a haven asset.

As for other precious metals, silver for December delivery added 2.6 cents, or 0.15 percent, to close at 17.073 dollars per ounce. Platinum for next January went down 8.30 dollars, or 0.89 percent, to settle at 927.30 dollars per ounce.