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