Vintage Rock Quartz Cut Crystal Necklace - 833 $50 or $45 w/offer

This vintage rock Quartz cut crystal necklace is full of shine. The metal is silver plate. I am pretty sure the beads are actual stone because they have weight to them and chips from hitting each other together. The stone is cold to the touch. The stone is clear with purple on the inside. I have no idea what is the purple from. I know the necklace is very old, at least from the 1960s, but could be older. The necklace is in excellent condition however has weathered whitish silver connectors. I am not sure if the weathered part is deliberate or because of age.