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