Know all about Theralite and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Tephrite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Tephrite is Aphanitic to Porphyritic. Theralite appears Veined and Shiny and Tephrite appears Vesicular. The luster of Theralite is waxy and dull while that of Tephrite is subvitreous to dull. Theralite is available in dark grey to black colors whereas Tephrite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Tephrite are production of lime, soil conditioner.