Know all about Schist and Tachylite properties here. All properties of rocks are important as they define the type of rock and its application. Schist belongs to Metamorphic Rocks while Tachylite belongs to Igneous Rocks.Texture of Schist is Foliated, Platy whereas that of Tachylite is Vitreous. Schist appears Layered and Shiny and Tachylite appears Glassy. The luster of Schist is shiny while that of Tachylite is resinous. Schist and Tachylite are available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Schist are used in aquariums, writing slates and that of Tachylite are cemetery markers, creating artwork.