Know all about Nepheline Syenite and Chert 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 Chert belongs to Sedimentary Rocks.Texture of Nepheline Syenite is Granular whereas that of Chert is Banded, Rough. Nepheline Syenite appears Banded and Foilated and Chert appears Glassy or Pearly. The luster of Nepheline Syenite is greasy to dull while that of Chert is waxy and dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.