Vintage Avon NRT Rhinestone silver Tone Necklace Extendable Prom

Vintage Avon - Beautiful necklace - very sparkly. Perfect to accent a party dress. Features an extender chain, 5 silver tone circles with rhinestones - the central stone is the largest. Composition - unknown. It is silver tone with rhinestones. This is not pure silver. Measurements: length without extender 21 cm while clasped together, extender adds 7 cm length laid out flat, not clasped, no extender is 41 cm