This is a mother-of-pearl ruler made with paua shell that shines in deep sea blues and greens. The iridescent shimmer that changes with the angle is beautiful, and you can enjoy a different pattern on each one. The surface is carefully coated with multiple layers of lacquer, achieving a deep luster and high durability. The elegant sheen unique to lacquer becomes more prominent the more you use it. The contrast with the black body is beautiful, making it a practical item with the presence of a work of art. This ruler will make your study or work time a special moment.