'Refined' in the Bible

and then the Almighty will be your gold and your refined silver.

“But He knows the way that I take [and He pays attention to it].When He has tried me, I will come forth as [refined] gold [pure and luminous].

Surely there is a mine for silverand a place where gold is refined.

"Refined gold cannot be gotten in its place, and silver cannot be weighed out [as] its price.

Gold and glass cannot be compared with it, and its substitution [cannot be] an ornament of refined gold.