Vintage Art Deco flat circular flat glossy black glass rings. These are 11mm diameter and 2.6mm in thickness and would work well for earring and necklace dangles and are sturdy enough to work as links for beads and chain. They are hand made and are 80-90 years old glass beads, France, 1920s. Uncirculated condition, very rare and very limited stock. Package 6 rings.