Gold Surges To 4-Month Highs, page-431

How would this affect gold mining company sites and tenements?

It wouldn't. During QE1, Homestake Mining became one of the most profitable companies in the world, as it was supported by the US Govt to fill their coffers at the newly inflated price of $35 / oz from $21. SP rose 500% between 1929 and 1935.

For jewellery, governments have set limits on purity - usually 9 or 14 carat.

I don't suggest the west will ever make gold ownership illegal again, but you can never say never I guess.