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