Vintage Avon Shy Butterfly Choker Necklace Gold Tone 1978
16” chain could also be choker style. Blue and green enamel butterfly on a gold tone chain.
Very nice preowned vintage condition. Totally adorable!
Butterfly is also offset a little to the side. Avon also called this style, a little on the shy side as the butterfly is off to the side if worn with clasp in the back center of the neck.