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