Sterling Silver Amethyst Bishop Ring with Gold-Plated CrossesNatural amethyst shifts with the light on this ring under fluorescent it leans toward a cool grape, then step outside and the stone opens into full royal purple, the kind of violet that bishops have worn on their hands since the Middle Ages. This is the Sterling Silver Amethyst Bishop Ring with Gold Plated Crosses. A . 925 silver body plated in 14K white gold, CZ halo around the stone, and two contrasting yellow gold crosses carved into the shoulders.