Know all about Scoria and Shale properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Shale belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Shale is Clastic, Splintery. Scoria appears Glassy and Vesicular and Shale appears Muddy. The luster of Scoria is subvitreous to dull while that of Shale is dull. Scoria is available in black, brown, dark grey to black, red colors whereas Shale is available in black, brown, buff, green, grey, red, 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 Shale are creating artwork, pottery.