Know all about Oil shale and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale belongs to Sedimentary Rocks while Scoria belongs to Igneous Rocks.Texture of Oil shale is Splintery whereas that of Scoria is Vesicular. Oil shale appears Muddy and Scoria appears Glassy and Vesicular. The luster of Oil shale is dull while that of Scoria is subvitreous to dull. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.