Know all about Oil shale and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Oil shale and Claystone belong to Sedimentary Rocks.Texture of Oil shale is Splintery whereas that of Claystone is Clastic. Oil shale appears Muddy and Claystone appears Rough and Dull. The luster of Oil shale and Claystone is dull. Oil shale is available in black, brown, buff, green, grey, red, yellow colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Oil shale are an oil and gas reservoir and that of Claystone are pottery.