Know all about Chert and Andesite properties here. All properties of rocks are important as they define the type of rock and its application. Chert belongs to Sedimentary Rocks while Andesite belongs to Igneous Rocks.Texture of Chert is Banded, Rough whereas that of Andesite is Aphanitic to Porphyritic. Chert appears Glassy or Pearly and Andesite appears Dull and Soft. The luster of Chert is waxy and dull while that of Andesite is vitreous. Chert is available in black, brown, green, grey, red, white colors whereas Andesite is available in bluish - grey, grey, pink, 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 Andesite are commemorative tablets, creating artwork.