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