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