Know all about Skarn and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Skarn belongs to Metamorphic Rocks while Argillite belongs to Sedimentary Rocks.Texture of Skarn is Earthy, Mud-rich, Rough whereas that of Argillite is Clastic, Polished. Skarn appears Dull and Argillite appears Rough and Dull. The luster of Skarn and Argillite is waxy and dull. Skarn is available in black, brown, colourless, green, grey, white colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo) and that of Argillite are fire resistant, used to manufracture paperweights and bookends.