Know all about Porphyry and Sandstone properties here. All properties of rocks are important as they define the type of rock and its application. Porphyry belongs to Igneous Rocks while Sandstone belongs to Sedimentary Rocks.Texture of Porphyry is Porphyritic whereas that of Sandstone is Clastic, Granular, Rough. Porphyry appears Dull and Sandstone appears Rough. The luster of Porphyry and Sandstone is dull. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors whereas Sandstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Porphyry are creating artwork, gemstone, jewelry and that of Sandstone are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.