vintage crystal aurora borealis glass bead bib choker faceted prisms w/ large teardrop

I know very little about vintage jewelry, but this piece was so pretty I couldn't pass it up. It's clear glass faceted beads with iridescent luster, with glass teardrop hung like a jewel at the center. The whole thing sparkles in the light!

It's pretty small, just 16". You'll probably want an extender if you want to wear this. Condition looks very good to me, I didn't see any damage. No makers marks that I could find.