Know all about Schist and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Schist belongs to Metamorphic Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Schist is Foliated, Platy whereas that of Itacolumite is Clastic, Granular, Rough. Schist appears Layered and Shiny and Itacolumite appears Rough. The luster of Schist is shiny while that of Itacolumite is dull. Schist is available in black, blue, brown, dark brown, green, grey, silver colors whereas Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Schist are used in aquariums, writing slates and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.