* Dollar index rises back towards Friday's 3-month high
* Investors trim COMEX gold longs in week to April 24
* GRAPHIC-2018 asset returns: http://tmsnrt.rs/2jvdmXl (Updates throughout, adds LONDON dateline)
By Jan Harvey
LONDON, April 30 (Reuters) - Gold fell on Monday, pulling back towards last week's more than one-month low as easing tensions on the Korean peninsula boosted appetite for assets seen as higher risk, such as stocks, and lifted the dollar.
The metal slid 1 percent last week on the back of a stronger dollar and a rise in Treasury yields to above 3 percent, which weighed on interest in non-interest bearing assets. On Thursday, it hit its lowest since March 21 at $1,315.06 an ounce.
That has left it on track to end April down 0.5 percent, erasing all the previous month's gains.
Spot gold XAU= was down 0.4 percent at $1,316.15 an ounce by 0935 GMT, while U.S. gold futures GCcv1 for June delivery were 0.5 percent lower at $1,316.90 an ounce.
"Easing geopolitical concerns and the strengthening dollar index are the factors which are creating the sell-off," said Naeem Aslam, chief markets analyst at Think Markets.
"We are looking at two important support levels - $1,307 followed by $1,300," he said, adding that a "break of these levels would bring more selling pressure."
At their summit on Friday, North Korean leader Kim Jong Un and South Korean President Moon Jae-in declared they would take steps to formally end the 1950-53 Korean War, which ended only with a truce, and work towards the "denuclearisation" of the Korean peninsula. dollar index rose 0.2 percent on Monday, holding just below its strongest since mid-January, while European shares rose after a positive session among Asian stocks overnight as tensions on the Korean peninsula eased. MKTS/GLOB FRX/
Hedge funds and money managers cut their net long position in COMEX gold contracts and switched to a net long position in silver contracts in the week to April 24, U.S. Commodity Futures Trading Commission data showed on Friday. nine consecutive weeks of a rare and even record net short silver position for money managers, the latest data shows that for the week ending Tuesday 24 the funds have returned to a slight net long," ING said in a note.
"Prices had briefly rallied above $17/oz but failed to hold as gold prices also fell. The gold/silver ratio has since recovered back above 80x since briefly hitting lows of 78x."
Among other precious metals silver XAG= was down 0.6 percent at $16.40 an ounce, off an earlier three-week low of $16.37. Platinum XPT= was down 0.6 percent at $905.00 an ounce, and palladium XPD= was 0.4 percent lower at $969.72.