Vintage Faux Pearl and Crystal Choker Necklace

Very old but still beautiful vintage choker with faux pearls and aurora borealis crystal beads, Hook clasp, Two of the pearls at the end have some peeling as shone on the last photo. Approximate length 13" and 2" extension. Pearls are acrylic but I am not sure of the metal, I've had it for several years and it has not tarnished