Ornament to raise to one’s ear (6)
I believe the answer is:
brooch
'ornament' is the definition.
(brooch is a kind of ornament)
'raise to one's ear' is the wordplay.
'raise' becomes 'broach' (as in broaching or raising a topic).
'to one's ear' shows a homophone (sound like).
'broach' sounds like 'BROOCH'.
'to' acts as a link.
(Other definitions for brooch that I've seen before include "Decorative pin" , "Piece of jewellery" , "Ornament with a hinged pin and catch" , "Adornment for dress" , "prehistoric tower" .)