Bit of a necklace (4)
I believe the answer is:
bead
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">bit of a necklace</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for bead that I've seen before include "Drop of moisture; holed piece of glass" , "Small round piece of glass" , "Small ornamental strung ball" , "Necklace component" , "A bit of the rosary" .)