Short light piece of jewellery (4)
I believe the answer is:
torc
'jewellery' is the definition.
(I know that torc is a type of necklace)
'short light' is the wordplay.
'short' means to remove the last letter.
'light' becomes 'torch' (type of light).
'torch' with its last letter taken away is 'TORC'.
'piece of' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for torc that I've seen before include "Twisted metal neck band" , "Rigid circular necklace" , "One gets into a twist" , "Celtic metal neck-ring" , "Metallic neck ornament" .)