Know all about Theralite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Nephelinite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Nephelinite is Aphanitic. Theralite appears Veined and Shiny and Nephelinite appears Skeletal. The luster of Theralite is waxy and dull while that of Nephelinite is vitreous to metallic. Theralite is available in dark grey to black colors whereas Nephelinite 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 Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).