Know all about Tephrite and Shale properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite belongs to Igneous Rocks while Shale belongs to Sedimentary Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Shale is Clastic, Splintery. Tephrite appears Vesicular and Shale appears Muddy. The luster of Tephrite is subvitreous to dull while that of Shale is dull. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Shale are creating artwork, pottery.