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