This classic medallion design is based on a traditional French pattern. It is a combination of intricate relief patterns with fine outlining and cut outs. It is inlaid with natural Agoya and dark Paua shell, with a Swarovski crystal embedded in the center. This design offers medium feedback reduction. This insert will fit most standard size guitars with a 3 7/8" to 4" inside diameter. The wood in the picture is quarter-sawn walnut. It is available in other woods. Wood color and grain can vary.