There are gold ETF’s - and gold funds - Franklin Templeton has a nice Gold Fund (FGADX)- Year to Date return as of November 5th was 46.3%.
Vanguard has a Precious Metals Fund (VGPMX) - Year to Date return: 31.3%. It’s never a good idea to put all your eggs in one basket... but both these funds strike me as trustworthy. I’m invested in both of them...
Here’s a nice site to check out mutual funds:
Such an investment would be a good hedge against inflation while still being somewhat liquid (and excluding gold, silver, lead and real estate).