Yes, but not all.

Much of the preciousness was hidden and the place of its hiding forgotten.

Bit by bit the churls found the treasure-trove, but they did not tell their lords.

They melted down jewels and sold them piecemeal to Jews for Jews' prices, and what they did not recognise as precious they wantonly destroyed.

I have seen the marble heads of heathen gods broken with the hammer to make mortar of, and great cups of onyx and alabaster used as water troughs for a thrall's mongrels..