Know all about Coquina and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Coquina belongs to Sedimentary Rocks while Nephelinite belongs to Igneous Rocks.Texture of Coquina is Clastic whereas that of Nephelinite is Aphanitic. Coquina appears Layered, Banded, Veined and Shiny and Nephelinite appears Skeletal. The luster of Coquina is dull to vitreous to submetallic while that of Nephelinite is vitreous to metallic. Coquina is available in beige, buff, orange colors whereas Nephelinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Coquina are creating artwork and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).