Ivory Stone Concave Tunnels (2 gauge - 13/16 inch)ONE PAIR of ivory stone double flared concave tunnels. These plugs are absolutely gorgeous and are polished to a smooth finish. Wearable area for sizes 8g 1 inch is 3 8 inch. Additional Info: Stone items are all hand made so they may slightly vary in size, color, and shape. All of our stones are guaranteed to be within 1mm of the stated size. If you need an exact measurement or better description of the item, feel free to email us before ordering.