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