Know all about Gossan and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Gossan and Skarn belong to Metamorphic Rocks.Texture of Gossan is Rough, Sandy whereas that of Skarn is Earthy, Mud-rich, Rough. Gossan appears Dull and Banded and Skarn appears Dull. The luster of Gossan is metallic while that of Skarn is waxy and dull. Gossan is available in brown, brown- black, gold, green, rust colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).