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