Gold edges up -

Gold prices edged up on Tuesday, supported by a softer dollar and Treasury yields, as investors hunkered down for Federal Reserve Chair Jerome Powell's upcoming speech at Jackson Hole later this week, reports Reuters.

Spot gold was up 0.2 per cent at $3,335.24 per ounce by 09:38 a.m. ET (1338 GMT). US gold futures for December delivery rose 0.1 per cent to $3,380.10.

The dollar index fell 0.1 per cent against its rivals, while benchmark 10-year yields also slipped.

"Generally, (traders are) positioning in the futures market ahead of the Jackson Hole meeting... it's going to be pretty quiet up until then," said Jim Wyckoff, senior analyst at Kitco Metals.

The Federal Reserve is set to hold its annual symposium later this week in Jackson Hole, Wyoming, with Fed Chair Jerome Powell scheduled to speak on the economic outlook and central bank's policy framework on Friday.

US President Donald Trump has continued to urge the Federal Reserve to pursue deeper rate cuts.

"My sense is that (Powell) might lean a little bit more dovish... that would be friendly for gold and silver prices," Wyckoff said.