I'm going to pass on gold rings (5)
I believe the answer is:
adieu
'i'm going' is the definition.
(I've seen this before)
'pass on gold rings' is the wordplay.
'pass on' becomes 'die' (pass on can mean to die).
'gold' becomes 'Au' (Au is the chemical symbol for gold).
'rings' is an insertion indicator (some letters are ringed or contained by others).
'die' going into 'au' is 'ADIEU'.
'to' is the link.
(Other definitions for adieu that I've seen before include "Comment on leaving" , "Ciao, in French" , "Goodbye to the French" , "the last word in Paris" , "Goodbye, madame" .)