Vintage Green Rhinestone Adjustable Ring Costume Jewelry

A very beautiful adjustable vintage green rhinestone ring. The stone on this ring is SUPER brilliant. So perhaps the stone is a Czech stone? This looks like an oldie, but I am not sure of the era.

The ring right now is approx. a size 7. The front measure 1" long. It is both gold tone and silver tone and there is a tad discoloration on the back. There is also a small ding in the stone on one side. See last photo. Sold as found and all sales are final.