Bible Verses About Metals: Freed from dross by fire

"Human being, the house of Isra'el has become an alloy of base metals for me; they are all copper, tin, iron and lead mixed together in the crucible, the dross left over from the silver.

Then, just as they collect silver, copper, iron, lead and tin into a crucible and blow fire on it to melt it down; so likewise I will collect you in my anger and fury, throw you in there, and melt you down.