Admirer of partner wearing gold rings primarily (7)
I believe the answer is:
amateur
'admirer' is the definition.
(thesaurus)
'partner wearing gold rings primarily' is the wordplay.
'partner' becomes 'mate' ('mate' can be a synonym of 'partner'**).
'wearing' means one lot of letters goes inside another.
'gold' becomes 'au' (Au is the chemical symbol for gold).
'primarily' suggests taking the first letters.
The first letter of 'rings' is 'r'.
'mate' put into 'au' is 'amateu'.
'amateu'+'r'='AMATEUR'
'of' is the link.
(Other definitions for amateur that I've seen before include "Unprofessional" , "Lover" , "he's not making any money" , "One who pursues an activity as a pastime only" , "Athlete who performs without payment" .)