Know all about Gossan and Dunite properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Dunite belongs to Igneous Rocks.Texture of Gossan is Rough, Sandy whereas that of Dunite is Phaneritic. Gossan appears Dull and Banded and Dunite appears Rough and Shiny. The luster of Gossan is metallic while that of Dunite is shiny. Gossan is available in brown, brown- black, gold, green, rust colors whereas Dunite is available in dark greenish - grey colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Dunite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.