Know all about Skarn and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Skarn belongs to Metamorphic Rocks while Tephrite belongs to Igneous Rocks.Texture of Skarn is Earthy, Mud-rich, Rough whereas that of Tephrite is Aphanitic to Porphyritic. Skarn appears Dull and Tephrite appears Vesicular. The luster of Skarn is waxy and dull while that of Tephrite is subvitreous to dull. Skarn and Tephrite are available in black, brown, colourless, green, grey, white colors. The commercial uses of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo) and that of Tephrite are production of lime, soil conditioner.