Endless personal ornaments (5)
I believe the answer is:
rings
'ornaments' is the definition.
(ring is a kind of ornament)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for rings that I've seen before include "See 12" , "Calls; circles" , "that may circle planet (not ours)" , "Small circles or bands for the finger" , "phones" .)