Know all about Schist and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Schist belongs to Metamorphic Rocks while Tephrite belongs to Igneous Rocks.Texture of Schist is Foliated, Platy whereas that of Tephrite is Aphanitic to Porphyritic. Schist appears Layered and Shiny and Tephrite appears Vesicular. The luster of Schist is shiny while that of Tephrite is subvitreous to dull. Schist is available in black, blue, brown, dark brown, green, grey, silver colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Schist are used in aquariums, writing slates and that of Tephrite are production of lime, soil conditioner.