Delicate crown (5)
I believe the answer is:
tiara
'delicate crown' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tiara that I've seen before include "Jewelled, ornamental headgear" , "Jewelled head ornament" , "Women's head ornament" , "Jewelled head-ornament" , "It might go to one's head" .)