Know all about Dunite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Dunite belongs to Igneous Rocks while Siltstone belongs to Sedimentary Rocks.Texture of Dunite is Phaneritic whereas that of Siltstone is Clastic. Dunite appears Rough and Shiny and Siltstone appears Rough. The luster of Dunite is shiny while that of Siltstone is dull. Dunite is available in dark greenish - grey colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Dunite 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.