Jewellery chain (8)
I believe the answer is:
necklace
'jewellery chain' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for necklace that I've seen before include "Jewelled chain at throat" , "Ornamental chain or cord" , "String of beads, perhaps" , "Chain worn as ornament" , "responsible for murder in South Africa" .)