Know all about Harzburgite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Harzburgite belongs to Igneous Rocks while Siltstone belongs to Sedimentary Rocks.Texture of Harzburgite is Phaneritic whereas that of Siltstone is Clastic. Harzburgite appears Rough and Shiny and Siltstone appears Rough. The luster of Harzburgite is shiny while that of Siltstone is dull. Harzburgite is available in dark greenish - grey colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that of Siltstone are raw material for the manufacture of mortar, soil conditioner.