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