By Friday on the London Bullion Market, the price of gold dipped to US$1,568 an ounce from US$1,598.25 the previous Thursday.
Silver slid to US$26.97 an ounce from US$28.64.
On the London Platinum and Palladium Market, platinum dipped to US$1,531 an ounce from US$1,576.
Palladium reversed to US$720 an ounce from US$770.
BASE METALS: Base or industrial metal prices fell across the board on demand worries linked to downbeat US data.
By Friday on the London Metal Exchange, copper for delivery in three months slipped to US$7,421 a tonne from US$7,606 the previous Thursday.
Three-month aluminum retreated to US$1,888 a tonne from US$1,913.
Three-month lead declined to US$2,067 a tonne from US$2,115.
Three-month tin sank to US$22,800 a tonne from US$23,150.
Three-month nickel reversed to US$16,065 a tonne from US$16,690.
Three-month zinc slid to US$1,887 a tonne from US$1,901.
SUGAR: Prices declined on the prospect of a supply surplus as a result of record crop in top global producer Brazil.
By Friday on LIFFE, the price of a tonne of white sugar for delivery in May eased to US$503.10 from US$505.50 the previous Thursday.
On NYBOT-ICE, the price of unrefined sugar for May dipped to US$0.1763 a pound (0.45kg) from US$0.1782.