Pure 1,000-gram gold bars produced by South Korea's LS-Nikko are stacked in a dealers room in Seoul on Jan. 9, 2009.
Spot gold was down nearly 1% at $2,304.99 per ounce, as of 0336 GMT.
U.S. gold futures fell 1.2% to $2,318.80.
"Investors are seeing this as an opportunity to lock in some profits after gold's recent run of good form," Waterer said.
Among other precious metals, spot silver fell about 1% to $26.92 per ounce, spot platinum dropped 0.7% to $911.10, and palladium slumped 1.1% to $997.75.
Persons:
Tim Waterer, Waterer, Gold
Organizations:
South Korea's, Nikko, KCM
Locations:
Seoul, Iran