Know all about Schist and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Schist belongs to Metamorphic Rocks while Picrite belongs to Igneous Rocks.Texture of Schist is Foliated, Platy whereas that of Picrite is Earthy, Rough. Schist appears Layered and Shiny and Picrite appears Rough and Shiny. The luster of Schist is shiny while that of Picrite is subvitreous to dull. Schist is available in black, blue, brown, dark brown, green, grey, silver colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Schist are used in aquariums, writing slates and that of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).