PRECIOUS-Gold jumps as Ukraine crisis boosts flight from risk

* Equities fall as tensions in Ukraine heighten

* Crude oil, Swiss franc, Japanese yen gain on Ukraine

* Investors to monitor U.S. nonfarm payrolls on Friday

(Updates prices, adds comment)

By Clara Denina

LONDON, March 3 (Reuters) - Gold extended gains to around 1.8 percent on Monday as escalating tensions between Ukraine and Russia bolstered demand for assets perceived to be relatively safe, hitting riskier investments such as equities.

Cash and U.S. gold futures hit four-month highs, while safe-haven currencies were also in vogue, with the Swiss franc touching its highest in over a year against the euro and the yen rising to a one-month peak versus the dollar. Href="NewsSearch">FRX/

Global equities fell and crude oil gained $2 a barrel as the United States threatened to isolate Russia economically in Moscow's biggest confrontation with the West since the Cold War.

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Gold is usually seen as a hedge against oil-led inflation and tends to move in tandem with crude prices.

"The uncertainty surrounding Ukraine could push gold prices higher in the next few weeks ... although diplomatic and political solutions are going to be sought ... a lot will also depend on investor positioning," Societe Generale analyst Robin Bhar said.

Spot gold XAU= rose as high as $1,350.80 an ounce in earlier trade, its loftiest since Oct. 30, and was at $1,350.00, up 1.8 percent, by 1512 GMT, heading for its biggest daily gain since Jan. 23.

Gold futures GCcv1 for April delivery hit a session high of $1,350.50 an ounce and later stood at $1,350.00, up $28.20.

The Group of Seven industrialised nations condemned Russia's intrusion into Ukraine and cancelled preparations for the G8 summit, which includes Russia, scheduled for Sochi in June, the White House said. News Search ID:nL1N0M001T

A recent series of weak U.S. data that showed how much a cold snap has hurt activity in the world's top economy, coupled with signs of a growth slowdown in China, boosted gold prices by 7 percent in February, the biggest monthly rise since July.

A U.S. nonfarm payrolls report on Friday should give investors a further opportunity to gauge the country's growth and its potential implications for the Federal Reserve's plan to unwind its stimulus programme.

HEDGE FUNDS INCREASE LONG POSITIONS

Hedge funds and money managers raised their net longs in gold futures and options to the highest in more than a year in the week to Feb. 25, data showed on Friday. News Search ID:nL1N0LX2B8

"We expect that so long as Ukraine/Russia tensions remain high, gold will remain bid but that needs to come from fresh longs as gross shorts are now much reduced," UBS said.

"The substantial increase in spec length in a relatively short span of time raises the potential for a short-term washout once geopolitical risks dampen."

The physical gold market got off to a slow start on Monday, with no signs of a pick-up in demand from jewellers. Premiums for gold bars in Singapore were unchanged from last week at 80 cents an ounce to spot London prices.

Silver XAG= followed gold's moves and rose 1.6 percent to $21.51 an ounce. Platinum XPT= was up 0.8 percent at $1,452.50 an ounce and palladium XPD= gained 0.6 percent at $743.30 an ounce.

South Africa's Association of Mineworkers and Construction Union dimmed prospects for a swift resolution of a five-week strike at the world's top three platinum producers when announcing it will stage a march in Pretoria on Thursday.

(Additional reporting by Lewa Pardomuan in Singapore; Editing by Dale Hudson, William Hardy and David Evans)

((clara.denina@thomsonreuters.com)(+44 207 542 9420)(Reuters Messaging: clara.denina.thomsonreuters.com@reuters.net))

Keywords: MARKETS PRECIOUS/