* Oil hits 2-1/2-year high, pulls back on Gaddafi rumor
* Gold hits record peak, silver at 31-year high on Libya
* US, European stocks fall on rising oil prices (Updates with closing oil prices)
By Walter Brandimarte
NEW YORK, March 7 (Reuters) - Global stocks fell on Monday as widening unrest in Libya and other Middle Eastern countries drove prices of oil and gold higher, raising concerns about the global economic recovery.
Oil jumped to a 2-1/2-year peak while gold hit a record high as fighting escalated around one of Libya's key ports. Both retreated later on talk that Libyan leader Muammar Gaddafi was trying to negotiate his exit from the country.
Also weighing on U.S. stocks was a Wells Fargo downgrade of the semiconductor sector, which has been leading a rally on Wall Street since the beginning of September.
The euro was slightly weaker against the dollar as expectations of an interest rate hike by the European central bank faded. Resurging debt concerns triggered by a Moody's downgrade of Greece also weighed on the European currency.
Brent crude oil futures <LCOc1> had jumped to $118.50 per barrel, the highest since September 2008, before finishing 0.8 percent lower, at $115.04 per barrel, as investors also took the opportunity to pocket some profits.
U.S. crude futures <CLc1>, however, closed up 0.98 percent at $105.44 a barrel after reaching an intraday high of $106.95.
"The major risk remains the prospect of the political unrest spreading to the Gulf-producing region," said Caroline Bain, economist at the Economist Intelligence Unit. "However, even if there is civil unrest in Saudi Arabia, it is not a given that oil production will be affected."
The prospects of further unrest in oil-rich Middle Eastern countries drove investors to seek safe-haven assets. Spot gold prices <XAU=> hit a record high of $1,444.40 an ounce while silver <XAG=> rose as high as $36.52 an ounce, its highest since early 1980.
Both retreated along with oil prices in the afternoon, but investors cautioned against further rises in the next few days.
"If we do see tension escalating further, then we could witness a new high in gold," said Ong Yi Ling, investment analyst at Phillip Futures in Singapore.
On Wall Street, technology shares led losses after Wells Fargo downgraded the chip industry to "market weight" from "overweight," saying the sector will grow moderately in 2011 compared with the past two years. For details, see [
]The Dow Jones industrial average <
> was down 79.85 points, or 0.66 percent, at 12,090.03. The Standard & Poor's 500 Index <.SPX> was down 11.01 points, or 0.83 percent, at 1,310.14. The Nasdaq Composite Index < > was down 39.04 points, or 1.40 percent, at 2,745.63.In Europe, the FTSEurofirst 300 index <
> of top shares closed 0.41 percent lower."There are still problems in Libya and there are concerns the oil price might curb economic recovery, " said Heino Ruland, strategist at Ruland Research in Frankfurt. "I think investors will continue to reduce exposure to their risk profile."
PORTUGUESE YIELDS AT RECORD HIGH
Refinancing costs paid by peripheral euro-zone countries were on the rise after Moody's slashed its rating on Greece by three notches, signaling more downgrades in the near future. [
]Portuguese 10-year yields <PT10YT=TWEB> rose to a euro lifetime high of 7.65 percent, also pushed higher by a government debt sale later this week.
The euro <EUR=EBS> was 0.06 percent lower at $1.3976, falling from an earlier four-month high of $1.4036 on electronic trading platform EBS.
The European single currency had been strengthening since ECB President Jean-Claude Trichet surprised investors last week by saying that euro-zone interest rates may rise as early as next month. (Additional reporting by Rodrigo Campos, Chris Reese, Nick Olivari; Editing by Dan Grebler)