Know all about Coquina and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Coquina belongs to Sedimentary Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Coquina is Clastic whereas that of Gneiss is Banded, Foliated, Platy. Coquina appears Layered, Banded, Veined and Shiny and Gneiss appears Foliated. The luster of Coquina is dull to vitreous to submetallic while that of Gneiss is dull. Coquina is available in beige, buff, orange colors whereas Gneiss is available in black, brown, pink, red, white colors. The commercial uses of Coquina are creating artwork and that of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.