* Emerging shares wane on valuation fears
* Russian rouble down on weaker oil, falling forex reserves
* Baltic debt insurance costs slip on Lithuania Q2 revision
By Sebastian Tong
LONDON, Aug 27 (Reuters) - Emerging shares eased on Thursday as wariness set in among investors about stretched valuations, although positive euro zone and U.S. consumption indicators helped to offset concern about the pace of Chinese economic growth.
Russia's rouble sagged against its dollar-euro basket as oil retreated towards $70 a barrel while the Hungarian and Polish central banks left their doors open for further monetary easing, keeping their currencies on the back foot.
Overnight falls in the Asian session set a more cautious trading tone but data showing sales of new homes in the U.S. hitting their highest levels in 10 months in July and better-than-expected consumer confidence indicators provided some support. [
]Pronouncements on Wednesday by Chinese leaders that Beijing would take steps to curb overcapacity in a range of industrial sectors also renewed doubts whether China can pull the rest of the world out of a downturn. [
]The benchmark emerging stocks index <.MSCIEF>, which has risen nearly 50 percent since the start of the year, fell for the third straight session, slipping 0.5 percent by 1035 GMT.
"Market players are unwilling to push currencies or other assets higher at present as valuations are rich, and going into September there are possible risk events like the German elections. People prefer to wait and see on the sidelines before adding to positions," said Elisabeth Gruie, currency strategist at BNP Paribas.
"We remain mindful of the tone to Chinese equities ... China was the first one to sell off in the bear markets of past years so ... the potential for contagion is high."
Most bourses in emerging Europe fared better than their Asian peers, cheered by euro zone figures showing the currency bloc's economy recovering at an accelerated clip.
The euro zone's leading economic index rose for the fourth month running while German consumer sentiment rose to its highest in 15 months. [
] [ ]Romanian shares <
> climbed to their highest level since October last year while Polish < > and Czech shares < > were up around 1 percent.
ISSUANCE
High-yield currencies were mixed although the rouble fell 0.4 percent against its dollar-euro basket as weakening oil prices weighed on investor appetite for the Russian currency.
Figures showing a week-on-week drop in Russia's gold and foreign exchange reserves, used to shore up the local currency, also added to selling pressure. [
]The Czech crown <EURCZK=> and Romania's leu <EURRON=> held firm against the euro, bolstered by positive euro zone data, but the Polish zloty <EURPLN=> and the Hungarian forint <EURHUF=> softened against the common currency on heightened expectations of further rate cuts.
A Polish central banker said more interest rate cuts could be in the offing this year if inflation eases while the deputy governor of Hungary's central bank said an improvement in the country's risk assessment allowed for further easing of monetary policy. [
] [ ]According to CMA DataVision, five-year credit default swaps (CDS) bought to insure against Lithuanian sovereign debt default fell by 14 basis points while those for Estonia and Latvia fell by 6 bps and 11 bps respectively.
Emerging sovereign debt spreads narrowed 1 basis point <11EMJ>, supported by news that Brazil may earn a much-coveted investment-grade rating from Moody's Investors Service in the coming weeks. [
]The environment for debt remains benign with South Africa becoming the most recent among emerging sovereign borrowers to return to the market.
South Africa added $500 million on Wednesday to a 2019 bond launched in May. [
]Romania has shortlisted 10 banks for a planned Eurobond bond while Ukraine has said it wants to sell a foreign bond by the end of the year. (Additional reporting by Sujata Rao; editing by David Stamp)