Know all about Chert and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Chert and Oil shale belong to Sedimentary Rocks.Texture of Chert is Banded, Rough whereas that of Oil shale is Splintery. Chert appears Glassy or Pearly and Oil shale appears Muddy. The luster of Chert is waxy and dull while that of Oil shale is dull. Chert is available in black, brown, green, grey, red, white colors whereas Oil shale is available in black, brown, buff, green, grey, red, 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 Oil shale are an oil and gas reservoir.