Astro Hungarian Arts and Crafts 2.66ct amethyst antique sterling silver ring. Good vintage condition with little signs of normal vintage wear. Great vintage patina. Unique wide handcrafted prongs hold a 2.66 ct amethyst. Stamped Hungary 800 on the top surface of the ring band. Acid tests positive for sterling silver. Gemstone tested with Presidium II gemstone tester. Ring measures size 8.