- Introducing Atlantis, the mystical inlay ring featuring abalone shell pieces and rainbow black and milky opals on a black background. Handmade and available in tungsten carbide, black ceramic, stainless steel, and silver core metals, each ring is one-of-a-kind and has a magical feel. Durable and visually stunning, Atlantis is a unique work of art that is sure to captivate.Read the tabs below for more information before placing an order.