Know all about Porphyry and Troctolite properties here. All properties of rocks are important as they define the type of rock and its application. Porphyry and Troctolite belong to Igneous Rocks.Texture of Porphyry is Porphyritic whereas that of Troctolite is Phaneritic. Porphyry appears Dull and Troctolite appears Veined and Shiny. The luster of Porphyry is dull while that of Troctolite is not available. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors whereas Troctolite is available in dark grey to black colors. The commercial uses of Porphyry are creating artwork, gemstone, jewelry and that of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.