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