Know all about Nephelinite and Diatomite properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite belongs to Igneous Rocks while Diatomite belongs to Sedimentary Rocks.Texture of Nephelinite is Aphanitic whereas that of Diatomite is Clastic or Non-Clastic. Nephelinite appears Skeletal and Diatomite appears Soft. The luster of Nephelinite is vitreous to metallic while that of Diatomite is dull. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Diatomite is available in grey, white, yellow colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Diatomite are alumina refineries, animal feed filler, as a feed additive for livestock, creating artwork, drawing on blackboards, fire resistant, gymnasts, athletes and mountain climbers use for grip, in aquifers, soil conditioner, to ignite fire, used as a filter medium, used as an insecticide, whiting material in toothpaste, paint and paper.