By the sound of it, bring up jewellery (6)
I believe the answer is:
brooch
'jewellery' is the definition.
(I know that Brooch is a jewellery)
'by the sound of it bring up' is the wordplay.
'by the sound of it' indicates a 'sounds like' (homophone) clue.
'bring up' becomes 'broach' (I've seen this in another clue).
'broach' sounds like 'BROOCH'.
(Other definitions for brooch that I've seen before include "Ornament pinned to clothing" , "Adornment for dress" , "Decorative clasp" , "Ornament with a hinged pin and catch" , "Pinned jewellery item" .)