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