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