Know all about Scoria and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Gritstone is Earthy. Scoria appears Glassy and Vesicular and Gritstone appears Layered and Foliated. The luster of Scoria is subvitreous to dull while that of Gritstone is dull. Scoria is available in black, brown, dark grey to black, red colors whereas Gritstone 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 Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Gritstone are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo), tombstones.