Know all about Chert and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Chert belongs to Sedimentary Rocks while Aplite belongs to Igneous Rocks.Texture of Chert is Banded, Rough whereas that of Aplite is Granular, Graphic. Chert appears Glassy or Pearly and Aplite appears Veined or Pebbled. The luster of Chert is waxy and dull while that of Aplite is dull to pearly to subvitreous. Chert is available in black, brown, green, grey, red, white colors whereas Aplite 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 Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.