• Australian gold stocks fall as much as 4.7%, their biggest intraday pct loss since July 24

• Sub-index hits its lowest level since Aug 20

• Gold prices fell more than 3% on Friday after U.S. Federal Reserve Chair Kevin Warsh's signalled interest rate that hikes may be needed [GOL/]

• Shares of Northern Star Resources and Evolution Mining fall 4.1% and 4.3%, respectively

• Seperately, NST said Deputy CEO Ryan Gurner will leave the gold miner

• YTD, AXGD up 4.2%

(Reporting by Nichiket Sunil in Bengaluru)