Know all about Marl and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Marl and Gritstone belong to Sedimentary Rocks.Texture of Marl is Earthy whereas that of Gritstone is Earthy. Marl appears Rough and Dull and Gritstone appears Layered and Foliated. The luster of Marl and Gritstone is dull. Marl is available in beige, brown, green, grey, white colors whereas Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Gritstone 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.