Crossword Genius

Metal badge-wearer (6)

Ross

I believe the answer is:

copper

I'm a little stuck... Click here to teach me more about this clue!

'metal' is the definition.
(I know that copper is a type of metal)

'badge-wearer' is the wordplay.
I cannot really understand how this works, but
'badge wearer' could be 'cop' (I've seen this in another clue) and 'cop' is present in the answer.
The remaining letters 'per' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for copper that I've seen before include "Chemical element, symbol Cu" , "PC" , "Metallic element for a British policeman" , "Little money" , "English policeman" .)

I've seen this clue in the Sydney Morning Herald.
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