Know all about Porphyry and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Porphyry belongs to Igneous Rocks while Claystone belongs to Sedimentary Rocks.Texture of Porphyry is Porphyritic whereas that of Claystone is Clastic. Porphyry appears Dull and Claystone appears Rough and Dull. The luster of Porphyry and Claystone is dull. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Porphyry are creating artwork, gemstone, jewelry and that of Claystone are pottery.