Know all about Dunite and Coquina properties here. All properties of rocks are important as they define the type of rock and its application. Dunite belongs to Igneous Rocks while Coquina belongs to Sedimentary Rocks.Texture of Dunite is Phaneritic whereas that of Coquina is Clastic. Dunite appears Rough and Shiny and Coquina appears Layered, Banded, Veined and Shiny. The luster of Dunite is shiny while that of Coquina is dull to vitreous to submetallic. Dunite is available in dark greenish - grey colors whereas Coquina is available in beige, buff, orange colors. The commercial uses of Dunite and Coquina are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.