Couple allowed to make wrist ornament (8)
I believe the answer is:
Here is my best explanation:
'wrist ornament' is the definition.
(I've seen this before)
'couple allowed' is the subsidiary indication.
'couple' becomes 'brace' ('brace' can be a synonym of 'couple').
'allowed' becomes 'let'.
'to make' is the link.
(Other definitions for bracelet that I've seen before include "Wrist, arm adornment", "Handcuff", "Ornamental wristband", "Personal ornament", "Might Bel react to the piece of jewellery?", "Arm band", "Ornament - handcuff (slang)", "Jewellery -- clear bet (anag)", "Ornamental band worn on wrist" and "Rebel cat (anag.)".)