* US silver futures hit 31-year high at $49.82/oz
* Spot gold rises to record of $1,517.71/oz
* Coming up: U.S. NAHB housing market index; 1400 GMT (Writes through; adds details, comments; updates prices)
By Rujun Shen
SINGAPORE, April 25 (Reuters) - Spot silver surged more than 5 percent to just above $49 ounce on Monday, buoyed by a weak dollar and strong physical demand in Asia that also propelled gold to a record high for a seventh consecutive session.
U.S. silver futures <SIcv1> jumped 8.2 percent to $49.82 an ounce in unusually large trading volume, just about 50 cents off its all-time peak of $50.35 hit on Jan. 18, 1980.
"Everyone is buying," said a Hong Kong-based dealer. "There is stop-loss buying, as well as a good buying interest from China."
Spot silver hit a 31-year high of $49.25 an ounce, and was trading at $48.82 by 0643 GMT. It was heading for its biggest daily gain in five months.
Silver prices have climbed nearly 60 percent so far this year, after jumping more than 80 percent in 2010, outpacing gold's 7 percent rise and the 10-percent gain in the 19-commodity Reuters-Jefferies CRB index .
Silver's astounding run has attracted big and small investors.
Holdings in the world's largest silver-backed exchange-traded fund, iShares Silver Trust , have risen by 2.4 percent so far this year, compared to a 4 percent decline in the holdings of SPDR Gold Trust, the world's top gold ETF.
Buying interest in physical silver has also jumped in India, where gold is traditionally favoured as a storage of wealth.
"The rally has been great as traders are buying silver like mad," said an official at a private bank in India.
"We normally don't import silver on a regular basis, but we imported about 10 tonnes from last month. Investors are joining in the rally in India to catch on the price appreciation."
Spot gold hit a record high of $1,517.71 an ounce, before easing to $1,515.65, up 0.8 percent.
U.S. gold futures <GCcv1> also rose to an all-time high, at $1,518.6.
"It's the dollar play," said a dealer based in Singapore.
The dollar index languished around its three-year low on Monday, with investors expecting further weakness as the upcoming Federal Reserves' policy-setting meeting is likely to announce the continuation of low interest rates.
The escalated violence in Syria and Yemen over the weekend also helped lift gold, seen as a safe haven during time of turmoil. [
]Precious metals prices 0616 GMT Metal Last Change Pct chg YTD pct chg Volume Spot Gold 1515.65 12.10 +0.80 6.78 Spot Silver 48.79 2.12 +4.54 58.10 Spot Platinum 1827.24 16.44 +0.91 3.38 Spot Palladium 768.78 3.30 +0.43 -3.84 TOCOM Gold 4015.00 33.00 +0.83 7.67 32996 TOCOM Platinum 4870.00 42.00 +0.87 3.71 8638 TOCOM Silver 129.00 6.10 +4.96 59.26 4600 TOCOM Palladium 2046.00 17.00 +0.84 -2.43 131 COMEX GOLD JUN1 1516.90 13.10 +0.87 6.72 18240 COMEX SILVER MAY1 48.81 2.75 +5.97 57.76 33489 Euro/Dollar 1.4572 Dollar/Yen 82.17 TOCOM prices in yen per gram. Spot prices in $ per ounce. COMEX gold and silver contracts show the most active months