Know all about Nephelinite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Nephelinite is Aphanitic whereas that of Flint is Banded, Rough. Nephelinite appears Skeletal and Flint appears Glassy or Pearly. The luster of Nephelinite is vitreous to metallic while that of Flint is vitreous. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.