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