Know all about Nepheline Syenite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Flint is Banded, Rough. Nepheline Syenite appears Banded and Foilated and Flint appears Glassy or Pearly. The luster of Nepheline Syenite is greasy to dull while that of Flint is vitreous. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork 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.