Know all about Chert and Comendite properties here. All properties of rocks are important as they define the type of rock and its application. Chert belongs to Sedimentary Rocks while Comendite belongs to Igneous Rocks.Texture of Chert is Banded, Rough whereas that of Comendite is Porphyritic. Chert appears Glassy or Pearly and Comendite appears Foliated. The luster of Chert is waxy and dull while that of Comendite is dull. Chert is available in black, brown, green, grey, red, white colors whereas Comendite is available in blue, bluish - grey 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 Comendite are cemetery markers.