Know all about Porphyry and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Porphyry and Scoria belong to Igneous Rocks.Texture of Porphyry is Porphyritic whereas that of Scoria is Vesicular. Porphyry appears Dull and Scoria appears Glassy and Vesicular. The luster of Porphyry is dull while that of Scoria is subvitreous to dull. Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Porphyry are creating artwork, gemstone, jewelry and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.