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