Know all about Schist and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Schist belongs to Metamorphic Rocks while Scoria belongs to Igneous Rocks.Texture of Schist is Foliated, Platy whereas that of Scoria is Vesicular. Schist appears Layered and Shiny and Scoria appears Glassy and Vesicular. The luster of Schist is shiny while that of Scoria is subvitreous to dull. Schist is available in black, blue, brown, dark brown, green, grey, silver colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Schist are used in aquariums, writing slates and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.