* Spot palladium hits 18-mth high, platinum at 17-mth peak
* Gold's gains seen limited as euro remains under pressure
* Holdings by SPDR Gold Trust <GLD> fall 0.914 tonnes
(Updates prices)
By Humeyra Pamuk
LONDON, Jan 18 (Reuters) - Platinum and palladium prices rallied to their highest in over 17 months on Monday, helped by investment demand after the launch of U.S.-based exchange-traded funds this month.
Analysts saw expect platinum and palladium, used in catalytic converters, to rise further, after gaining 14 percent and 28 percent respectively since late December.
The rise of platinum group metals (PGM) and the dollar's dip against a basket of currencies lifted gold, but analysts said fresh impetus was needed to push bullion higher as there was little support from currency markets with the euro under pressure. [
]Spot platinum <XPT=> rose as high as $1,626.00 per ounce, its highest since August 2008, and was at $1,619 an ounce by 1204 GMT, versus $1,596.50 an ounce late in New York on Friday.
Spot palladium <XPD=> rose as high as $457.50 an ounce, its highest since early July 2008, and was $455 from Friday's $452.50 an ounce.
"We see follow-on buying from the launch of ETFs. There's good interest in both metals," said precious metals strategist Tom Kendall at Mitsubishi. "For palladium $500 an ounce is a very obvious target and wholly achievable in the three to six months."
Kendall said the market was more bullish on palladium than platinum because of the former's fundamentals. Palladium is cheaper than platinum and is likely to be preferred by the auto industry as it recovers.
"The extraordinary popularity of these investment vehicles illustrates: a) consensus over the favourable fundamental outlook for the PGMs; and b) the appetite for investment in the precious metals space has yet to be satiated," Morgan Stanley said in a research note.
FRESH IMPETUS NEEDED
Gold prices were up slightly but rises were limited as the euro remained under pressure due to Greece's financial problems and concerns over their potential impact on the single currency.
Investors have also kept to the sidelines because New York markets were closed on Monday for Martin Luther King Jr. Day.
Spot gold <XAU=> inched up to $1,135.85 per ounce compared with $1,129.90 an ounce late in New York on Friday. U.S. gold futures for February delivery <GCG0> were at $1,135.90 per ounce, up 0.5 percent.
"Until we get fresh momentum based on an event or data, gold is going to continue to struggle as long as the dollar is being preferred versus the euro," Kendall said.
Concerns over Greece and its ballooning fiscal deficit weighed on the single currency and market players will keep a close eye on comments from euro zone finance ministers meeting on Monday. [
]Spot gold hit a five-week high of $1,161.50 on Jan. 11. Gold has fallen 2.3 percent since then, as a rise in the greenback hurt investor sentiment.
The high prices of gold has hurt Italian jewellers, who are now turning to alternative materials such as leather, textiles and ceramics to offset the high prices, an industry executive at the Vicenza trade fair said. [
]For stories from the Vicenza fair, click on [
]Holdings by the world's largest gold-backed exchange-traded fund, SPDR Gold Trust <GLD>, fell 0.914 tonnes to 1,112.836 tonnes on Jan 15. [
]For a graphic on the SPDR holdings, click: http://link.reuters.com/teh24h
Silver <XAG=> prices were at $18.62 an ounce versus $18.36 an ounce late in New York on Friday.
(Additional reporting by Risa Maeda in Tokyo, Editing by Sue Thomas)