Know all about Claystone and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Claystone and Chert belong to Sedimentary Rocks.Texture of Claystone is Clastic whereas that of Chert is Banded, Rough. Claystone appears Rough and Dull and Chert appears Glassy or Pearly. The luster of Claystone is dull while that of Chert is waxy and dull. Claystone and Chert are available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Claystone are pottery and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.