Spot gold earlier fell as low as $1,539.74 an ounce, its weakest point since May 30. It was last down 0.2 percent at $1,554.60 by 3:30 pm EDT (1930 GMT). US Comex gold for June delivery settled down $1.10 at $1,552.40, with volume about 5 percent below its 30-day average, preliminary Reuters data showed. Among other precious metals, silver tumbled to its lowest level since July 24 at $26.62 an ounce. It was last down 0.1 percent at $26.89. Platinum dropped to its lowest since late August at $1,504.50. It was later at $1,522.50, down 0.6 percent, while palladium was down 3.1 percent at $726.50, having hit a one-month low of $720.22.