Vintage Duo Paris Glass Stone Adjustable Ring

Gorgeous ring from the early 1990's. It is by Vintage Duo and has a striking green glass stone (1-inch high x .75 inches wide). It appears to be made of pewter but not certain of material. The ring is adjustable. As shown it fits a 6.5 ring size but can be expanded larger. In good vintage condition. Very striking on. UST54