Know all about Gritstone and Charnockite properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Charnockite belongs to Igneous Rocks.Texture of Gritstone is Earthy whereas that of Charnockite is Granular. Gritstone appears Layered and Foliated and Charnockite appears Veined or Pebbled. The luster of Gritstone is dull while that of Charnockite is not available. 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 Charnockite is available in black, grey, orange, pink, white 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 Charnockite are curling, gemstone, laboratory bench tops, tombstones.