* Palladium hits nine-year peak, silver at 30-year highs
* Gold up for a third day above $1,410/oz
* Coming up: U.S. pending home sales; 1500 GMT
(Updates with comment, refreshes prices)
By Amanda Cooper
LONDON, Dec 30 (Reuters) - A weaker U.S. dollar and a year-end flurry of investment in commodities pushed silver to new 30-year highs on Thursday, while palladium neared its highest in almost ten years and gold held above $1,400 an ounce.
The dollar weakened broadly after the largest one-day decline in five-year Treasury yields <US5YT=RR> in three months removed some of the currency's appeal to non-U.S. investors, giving a number of commodities, such as copper, which hit all-time highs above $9,500 a tonne <CMCU3>. [
] [ ]Spot silver <XAG=> was last at $30.60 an ounce, up 0.4 percent on the day by 1500 GMT, having risen by as much as 1 percent earlier to a session peak at $30.88, pushing the gold/silver ratio, which denotes each metal's relative performance, to its lowest in four years.
"These last few days it seems as if silver has been the main driver and gold is just trotting along with a lack of sellers," said Saxo Bank senior manager Ole Hansen.
"Once something has a firm trend established, it's easy to push ... there has to be a story behind it to justify it otherwise you would have seen profit-taking setting in a while back," he added.
Silver is at its highest since early 1980, on course for an 83 percent gain this year, its strongest performance in at least 27 years.
SILVER LINING
Investors have flocked into silver this year as a cheaper safe-haven alternative to gold, which hit a record high of $1,430.95 an ounce in early December.
Holdings of silver in the iShares Silver Trust <SLV>, the world's largest exchange-traded fund backed by physical silver, have risen to 10,903.34 tonnes, from 9,492.97 tonnes at the end of last year, while open interest in U.S. silver futures has risen by 8,801 contracts, or 44.0 million ounces.
Gold eased by 0.3 percent to $1,406.75 an ounce after a gauge of business activity in the auto-intensive U.S. Midwest region far outstripped expectations in December. [
]The gold price is also is set for its tenth consecutive annual gain, having risen by nearly 30 percent in 2010, its strongest yearly performance since a 31 percent rise in 2007 when the global financial crisis began to manifest itself.
Gold's inverse correlation to the dollar index <.DXY> reached its strongest in eight weeks on a 30-day rolling basis.
"Overall, I don't think today or tomorrow we are going to have any kind of correction as such," said Afshin Nabavi, MKS Finance head of trading.
"I'm quite friendly towards it and probably feel that tomorrow night we are going to end the year with some fireworks as well," referring to the potential for gains in other metals.
The euro zone debt crisis, which unfolded in April this year and culminated in multi-billion euro international bailouts for both Greece and Ireland, has been one of the prime drivers of investment demand for gold.
Holdings of gold in the SPDR Gold Trust <GLD>, the world's largest exchange-traded fund backed by physical bullion, have risen 15 percent this year to 1,284.062 tonnes, and a near 20 percent rise in open interest in U.S. gold futures also reflects some of this investor desire to hold gold. [
] <0#CFTC>Palladium notched up a fourth straight day of increases and was set for a second year of gains, having almost doubled to near $800 an ounce over the course of 2010 and is this year's top performing commodity.
Analysts widely expect a surge in demand for palladium next year, mainly from China, which boasts the world's largest auto market that is dominated by gasoline-powered vehicles, which use palladium in their catalytic converters.
The ratio of platinum to palladium has fallen to its lowest in about eight years this year, mirroring palladium's outperformance over platinum, which relies heavily on the flagging European car market as a source of industrial demand.
Spot palladium <XPD=> rose to a nine-year high of $795.00 before trading back at $794.47, up 0.5 percent on the day, while platinum <XPT=> rose to a session high of $1,767.5, its highest since Nov 11, before holding largely steady at $1,753.99. (Additional reporting by Rujun Shen in Singapore, editing by Keiron Henderson)