A necklace is an ornament worn around the neck.

bead /bēd/

n A small piece of glass, stone, or similar material, typically rounded and perforated for threading with others as a necklace or rosary…

v Decorate or cover with beads: “a beaded evening bag”.

Synonyms: drop, pearl

neck·lace /ˈneklis/

n An ornamental chain or string of beads, jewels, or links worn around the neck.

Synonyms: collar, necklet, chaplet, gorget