(Updates prices)
* Gold set to post largest weekly fall since end-November
* Precious metal to struggle as long as yields rise - analyst
* Silver on course for biggest weekly dip since mid-Jan, down 1.5%
* Platinum looks set to post third weekly gain
By Nakul Iyer
Feb 19 (Reuters) - Gold extended its losing streak to a seventh session on Friday, sliding to its lowest since early July as U.S. Treasury yields continued their march higher, souring the non-interest bearing metal's appeal.
Spot gold XAU= fell 0.3% to $1,769.61 per ounce by 1207 GMT, having hit its lowest since July 2 at $1,759.29 earlier in the session.
The safe-haven metal has slipped 2.9% so far this week and is on track to match November 2018's seven-day streak of daily losses, the longest since November 2016.
U.S. gold futures GCv1 fell 0.5% to $1,766.90.
"As long as yields move higher, the market is simply going to struggle to find a footing," said Saxo Bank analyst Ole Hansen, adding that if the metal fails to hold the $1,765 level, a further downward move could be likely.
Benchmark U.S. Treasury yields US10YT=RR hovered near a one-year high hit earlier this week, pushing investors into riskier assets and away from bullion.
Weaker U.S. employment data that undermined recovery hopes also failed to keep gold prices afloat. analysts say gold should still benefit from continued loose monetary policy and low real interest rates this year.
Commerzbank (DE:CBKG) analysts said in a note that gold's behaviour resembled that of a tsunami, with prices receding in the first phase before coming back all the more violently.
Autocatalyst metal platinum XPT= edged 0.1% down to $1,273.50 an ounce, but was set to post its third straight weekly gain, having hit a more than six-year peak earlier in the week.
"If the ongoing overall reflation focus supporting commodities with a tight and a green theme attached to it continues, then platinum will continue to attract investment demand," Saxo's Hansen said.
Palladium XPD= dropped 0.3% to $2,345.36 an ounce, while silver XAG= fell 0.2% to $26.96 and was set for its biggest weekly decline since mid-January, slipping 1.5%.