The said item of jewellery you wrench from (5)
I believe the answer is:
wring
'wrench from' is the definition.
(thesaurus)
'the said item of jewellery' is the wordplay.
'the said' shows a homophone (sound like).
'item of jewellery' becomes 'ring' (I've seen this in other clues).
'ring' is a homophone of 'WRING'.
'you' acts as a link.
This may not be correct. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for wring that I've seen before include "Twist forcibly" , "Squeeze liquid from" , "Squeeze and twist" , "Extract with difficulty" , "Twist and compress" .)