Know all about Gritstone and Luxullianite properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Luxullianite belongs to Igneous Rocks.Texture of Gritstone is Earthy whereas that of Luxullianite is Granular, Phaneritic. Gritstone appears Layered and Foliated and Luxullianite appears Veined or Pebbled. The luster of Gritstone is dull while that of Luxullianite is dull to grainy with sporadic parts pearly and vitreous. 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 Luxullianite 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 Luxullianite are creating artwork, curling, gemstone, laboratory bench tops, tombstones.