Know all about Picrite and Theralite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite and Theralite belong to Igneous Rocks.Texture of Picrite is Earthy, Rough whereas that of Theralite is Phaneritic. Picrite appears Rough and Shiny and Theralite appears Veined and Shiny. The luster of Picrite is subvitreous to dull while that of Theralite is waxy and dull. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Theralite is available in dark grey to black colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.