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