(Changes dateline, byline, adds quotes, update prices PVS TOKYO)
* Gold rallies from $912.90 as dollar turns south
* SPDR gold ETF holdings <XAUEXT-NYS-TT> ease slightly
* Gold rally tired, but risk aversion could arrest fall
By Veronica Brown and Nick Vinocur
LONDON, June 23 (Reuters) - Gold rallied from a six week low hit earlier in the global session, with currency fundamentals proving the dominant factor as the dollar got stung by concerns over U.S. indebtedness.
Spot gold stood at $919.05 per ounce by 1005 GMT, having earlier hit a six week low at $912.90 in Asian trade. That compared with $921.90 quoted late in New York on Monday.
Traders said that bullion prices, having hit three month highs recently just shy of $1,000 an ounce, were ripe for the falls seen over the past few days with speculators looking to clear out stale long positions.
But the metal's traditional role as a hedge against jittery sentiment in other asset classes could also kick in as investors, spooked by doubts about growth prospects for leading economies, shift into risk-averse gear.
"All eyes are on whether the dollar is going to be subject to a fresh-selling wave. The only source I see for that would be if the Fed gets more vocal in communicating on the next batch of Treasury buying," said Ashraf Laidi, analyst at CMC markets in London.
"Anything short of that, will remain neutral or positive for gold," he added.
Concerns about reserve diversification away from U.S. assets caused the dollar to turn lower against the euro ahead of the Federal Reserve's monthly meeting, after Moody's said one risk to the U.S.' triple-A rating is if the dollar is challenged as the main reserve currency. [
].A weaker dollar makes metals and other commodities priced in the U.S. unit cheaper for non-U.S. investors.
Potential inflationary concerns from oil receded, with crude prices falling below $67 <CLc1> per barrel -- influenced by renewed worries about the economic outlook for major economies.
INVESTOR CAUTION
U.S. gold futures for August delivery <GCQ9> steadied to $920.40 per ounce. August futures <GCQ9> settled down 1.6 percent at $921 an ounce on Monday on the COMEX division of the New York Mercantile Exchange.
Investor caution was stirred by the World Bank on Monday, which said prospects for the global economy remained "unusually uncertain" as it cut 2009 growth forecasts for most economies.
"Investor risk appetite has lost forward momentum as the market begins to question the extent to which the green shoots of the financial risk rally have roots in the real economy," Tullet Prebon said in a note to clients.
"There is nothing like a 3.1 percent drop in the S&P on a day to get the bears out of the woods..., but the joke aside it is beginning to look like those who hoped for a V-shaped recovery will find that we are looking at the tail end of it."
The world's largest gold-backed exchange-traded fund, the SPDR Gold Trust <GLD>, said its holdings fell to 1,131.24 tonnes as of June 22, down 0.91 tonnes from the previous business day. [
]It was the first change in the holdings since June 5. The holdings hit a record 1,134.03 tonnes earlier in the month.
In other metals, silver held firm at $13.75 <XAG=>, up slightly from $13.72 quoted late in New York on Monday. Platinum rose to $1,164.50 <XPT=> from $1,159.50, while palladium <XPD=> strengthened to $234.00 from $232.00.
(Additional reporting by Chikako Mogi in Tokyo)
(Editing by Keiron Henderson)