Know all about Rhomb Porphyry and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Scoria belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Scoria is Vesicular. Rhomb Porphyry appears Rough and Scoria appears Glassy and Vesicular. The luster of Rhomb Porphyry and Scoria is subvitreous to dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo) and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.