Know all about Trachyte and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte and Porphyry belong to Igneous Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Porphyry is Porphyritic. Trachyte appears Banded and Porphyry appears Dull. The luster of Trachyte is metallic while that of Porphyry is dull. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Trachyte are cemetery markers, creating artwork and that of Porphyry are creating artwork, gemstone, jewelry.