Jeweled headdress (5)
I believe the answer is:
tiara
'jeweled headdress' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tiara that I've seen before include "Ornamental head gear" , "Item of jewellery" , "Decorative headband" , "Pope's triple crown" , "Jewelled headpiece" .)