Know all about Chert and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Chert and Argillite belong to Sedimentary Rocks.Texture of Chert is Banded, Rough whereas that of Argillite is Clastic, Polished. Chert appears Glassy or Pearly and Argillite appears Rough and Dull. The luster of Chert and Argillite is waxy and dull. Chert is available in black, brown, green, grey, red, white colors whereas Argillite is available in dark grey to black, pink, red, 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 Argillite are fire resistant, used to manufracture paperweights and bookends.