Precious metal headbands are typically just referred to as headbands. However, occasionally they can be referred to as an Alice band.
a lump of precious metal is called at nugget if talking about gold
smith
cloth and metal
gold rush
No, zinc is not a precious metal. It is a necessary industrial metal.
Tiaras
iradium is the precious metal element apart from platinum
is brass a precious metal
Niobium is a rare metal, good additive for stainless, but not precious - it is grey
Generally that would be a description of precious or semi-precious gems. Some ores containing precious metals may still be considered minerals and be expensive. In that case you would refer to them as "precious metal ore".
Uranium is not a precious metal (as Au, Ag, Pt,.....) but is a valuable metal mined in Namibia.
Yes. Gold is an extremely precious metal. It is one of the most expensive metals there is.