Sterling Silver Amethyst & Peridot Cluster Ring - Size 10. This beautiful sterling silver ring features a round cluster of genuine Amethyst stones in the center, and a triangle design of genuine Peridot stones on each side. The amethyst stones are an unusual color. At first glance, they appear to look like a smokey topaz stone instead of the more common purple, but they register as Amethyst when tested with a gem tester. The "925" sterling silver mark is stamped on the inside. This ring would add a touch of style to any outfit.