Fire Opal Purple Gold Ring Vintage Bohemia Glass Cabochon 16 mm The pictured ring is handmade in our Cologne studio. The setting is made of genuine gold-plated tombac. Stone size: Approx. 16 mm The ring band is adjustable and can easily be adapted to any finger. Color: Fire opal, purple Brand: SoHo® The settings and ear wires are soldered and galvanized in Germany in compliance with environmental regulations.