Know all about Oil shale and Harzburgite 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 Harzburgite belongs to Igneous Rocks.Texture of Oil shale is Splintery whereas that of Harzburgite is Phaneritic. Oil shale appears Muddy and Harzburgite appears Rough and Shiny. The luster of Oil shale is dull while that of Harzburgite is shiny. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.