Precious metals gold and silver retreated as the US dollar strengthened, while base metals, such as copper, tin and nickel, fell partly because of rising global stockpiles.

GOLD: Gold prices dived lower.

"Dollar strength has weighed on the gold market this month," said Standard Chartered analyst Helen Henton.

A stronger US currency tends to crimp demand for dollar-denominated commodities, such as gold and silver, as they become more expensive for buyers holding other currencies.

On the London Bullion Market, gold fell heavily to 655.25 dollars an ounce at Friday's late fixing, from 666.50 dollars a week earlier.

SILVER: Silver prices also fell.

"Silver was quick to follow gold lower," noted James Moore, analyst at specialist website TheBullionDesk.com, adding that weaker base metal prices were providing additional pressure.

On the London Bullion Market, silver pulled back to 13.31 dollars an ounce at Friday's late fixing, from 13.53 dollars a week earlier.

COFFEE: Coffee prices enjoyed their highest level in London for nine years, hitting 1,890 dollars per tonne.

"London robusta futures have moved sharply higher this month on supply concerns from Vietnam as inventories are dwindling," said Henton at Standard Chartered.

GRAINS AND SOYA: Grains and soya prices saw mixed trading as traders tracked growing conditions in key producing countries.

"The main focus this week has been the declining crops in Western Russia and Ukraine because of a drought," said Allendale analyst Joe Victor.

"We could see a very strong heat in the (US) Midwest next week that could hurt the production of corn and soy beans."

By Friday on the Chicago Board of Trade, the price of maize for July delivery eased to 3.7875 dollars a bushel, from 3.8675 dollars a week earlier.

Wheat for July delivery climbed to 5.25 dollars a bushel, from 5.2075 dollars.

July-dated soyabean meal -- used in animal feed -- decreased to 8.1350 dollars, from 8.1750 dollars.

On the LIFFE, London's futures exchange, the price per tonne of wheat for November delivery increased to 106 pounds, from 103.80 pounds the previous week.

SUGAR: Sugar prices dived lower.

"Fundamentals remain bearish with more negative news after it was confirmed that India was selling a massive crop of raw sugar, planning to export around 500,000 tonnes of raw sugar in the next season to the Middle East and Bangladesh," Davies said.

By Friday on the LIFFE, the price per tonne of white sugar for August delivery fell to 311.50 dollars, from 333.20 dollars a week earlier.

On the NYBOT, the price of unrefined sugar for July delivery slumped to 8.74 US cents a pound, from 9.24 cents.

RUBBER: The price of rubber fell as rainy weather dampened output in key producing countries.

"Weather conditions are still bad. It has been raining heavily and this has disrupted production," said rubber broker Robert Chai from Intracom.

WOOL: The price of wool unwound in major producer Australia as the local currency hit 17-year highs against the US dollar. A stronger Australian dollar which makes exports more expensive for buyers abroad.