Know all about Gritstone and Basalt properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Basalt belongs to Igneous Rocks.Texture of Gritstone is Earthy whereas that of Basalt is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Gritstone appears Layered and Foliated and Basalt appears Dull and Soft. The luster of Gritstone is dull while that of Basalt is not available. Gritstone and Basalt are 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 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 and that of Basalt are an oil and gas reservoir, commemorative tablets, creating artwork, used in aquariums.