The beauty of fruit (5)
I believe the answer is:
peach
This clue is a double definition.
'the beauty' is the first definition.
('peach' can be a synonym of 'beauty')
'fruit' is the second definition.
(peach is a kind of fruit)
'of' acts as a link.
(Other definitions for peach that I've seen before include "Fruit with downy skin" , "... and a good-looking one" , "TREE" , "nickname of US State" , "Furry fruit" .)