* Demand from jewellers slow in Asia
* Coming Up: U.S. Redbook mm Weekly; 1355 GMT (Updates prices, adds quotes)
By Lewa Pardomuan
SINGAPORE, Dec 21 (Reuters) - Gold firmed on Tuesday as fears of further ratings downgrades in Europe spurred buying from speculators, but demand from jewellers slowed to a trickle in Asia, with most orders already filled before the year-end holidays.
The euro was on the defensive on simmering fears that some euro zone countries and banks could face more borrowing strains after Moody's said it may cut the ratings on Spanish banks. Speculation has also risen that France and Belgium may face cuts.
Spot gold added $1.70 an ounce to $1,386.60 an ounce by 0320 GMT in thin trade, which means that prices are prone to sharp movements. Gold was well below a historical high of around $1,430 hit earlier this month.
The euro zone worries were likely to be the main supporting factor for bullion after tensions in the Korean peninsula eased, with North Korea stepping back from confrontation over "reckless" military drills by South Korean military. ID:nL3E6NL01W]
"The volume is light, so a little of buying will push up gold. There's not too much sale of scrap at these levels. Next year will be a good year again for gold," said Ronald Leung, director of Lee Cheong Gold Dealers in Hong Kong.
"There are (ratings) downgrades in Europe, almost every day."
Premiums for gold bars were at $1 an ounce to the spot London prices in Hong Kong, steady from last week. .
U.S. gold futures for February rose $1.3 to $1,387.4 an ounce. Gold, which has gained by almost 30 percent this year, is on track for a fifth successive month of gains.
Greater inflows into bullion-backed, exchange-traded funds and increased open interest in U.S. futures have helped fuel gold's price rise this month.
In equities, Japan's Nikkei average rose 0.7 percent on Tuesday as investors hunted for bargains in recent decliners, but volume was low due to an absence of foreign participants before the Christmas holidays.
"We do see some physical demand out of Thailand. When the price came off last week, we did see buying from Indonesia, but other than that, people are waiting for Christmas and New Year," said a dealer in Singapore.
"It will be too late to buy gold to stock up now. Towards the year-end, there are not many orders from jewellers."
Premiums for gold bars were also steady at 70 cents in Singapore.
Oil prices rose for the third straight session on Tuesday, supported by cold weather in the United States and Europe, seasonal gasoline demand, and an expected drop in U.S. crude stocks. Precious metals prices at 0320 GMT Metal Last Change Pct chg YTD pct chg Turnover Spot Gold 1386.60 1.70 +0.12 26.55 Spot Silver 29.30 -0.03 -0.10 74.09 Spot Platinum 1707.49 15.49 +0.92 16.39 Spot Palladium 742.22 2.22 +0.30 83.04 TOCOM Gold 3740.00 -4.00 -0.11 14.76 17533 TOCOM Platinum 4645.00 2.00 +0.04 6.03 4371 TOCOM Silver 79.10 -0.10 -0.13 53.00 995 TOCOM Palladium 2013.00 -3.00 -0.15 72.79 233 Euro/Dollar 1.3163 Dollar/Yen 83.64
TOCOM prices in yen per gram. Spot prices in $ per ounce. (Editing by Himani Sarkar)
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