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