Fetch gold for enthusiast (9)
I believe the answer is:
collector
'for enthusiast' is the definition.
(thesaurus)
'fetch gold' is the wordplay.
'fetch' becomes 'collect' (I've seen this before).
'gold' becomes 'or' ('or' is the heraldic name for gold).
'collect'+'or'='COLLECTOR'
(Other definitions for collector that I've seen before include "Person who calls for payments etc." , "One acquiring items" , "Acquirer of antiques, taxes, etc" , "Accunulator, gatherer" , "One who accumulates things" .)