Know all about Gritstone and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone and Oil shale belong to Sedimentary Rocks.Texture of Gritstone is Earthy whereas that of Oil shale is Splintery. Gritstone appears Layered and Foliated and Oil shale appears Muddy. The luster of Gritstone and Oil shale is dull. Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Gritstone and Oil shale are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo), tombstones.