Moonstone is a sodium potassium aluminum silicate. Its name is derived from a visual effect, or sheen, caused by light diffraction within a microstructure consisting of a regular succession of feldspar layers. It is composed of two feldspar species, orthoclase and albite.
Special Color is a method using tools to make marks on the surface of metal. These marks have the same length and width, giving the metal a unique and special texture.