Found gold star (6)

I believe the answer is:

castor

'star' is the definition.
(Castor is an example)

'found gold' is the wordplay.
'found' becomes 'cast' (I've seen this in another clue).
'gold' becomes 'or' ('or' is the heraldic name for gold).
'cast'+'or'='CASTOR'

(Other definitions for castor that I've seen before include "Pollux's twin" , "Sprinkler" , "Fur of the beaver" , "Powdered sugar" , "Roller on chair" .)

I've seen this clue in The Globe and Mail.

Want a hint initially instead of a full solution? Install my app