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