Know all about Chert and Luxullianite properties here. All properties of rocks are important as they define the type of rock and its application. Chert belongs to Sedimentary Rocks while Luxullianite belongs to Igneous Rocks.Texture of Chert is Banded, Rough whereas that of Luxullianite is Granular, Phaneritic. Chert appears Glassy or Pearly and Luxullianite appears Veined or Pebbled. The luster of Chert is waxy and dull while that of Luxullianite is dull to grainy with sporadic parts pearly and vitreous. Chert is available in black, brown, green, grey, red, white colors whereas Luxullianite is available in black, grey, orange, pink, 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 Luxullianite are creating artwork, curling, gemstone, laboratory bench tops, tombstones.