Vintage Sterling Silver Turquoise Glass Adjustable Ring

Vintage adjustable sterling silver simulated turquoise matrix glass ring.
Good condition with typical signs of age and wear. Ring shank is slightly out of round. One small scratch on the glass visible with magnification.
Face of ring measures approx. 19mm x 14mm
Rise from finger 10.5mm
Hallmarks: Sterling
Maker's mark: A symbol is present but not identified.