Know all about Granulite and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Granulite belongs to Metamorphic Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Granulite is Granoblastic whereas that of Gritstone is Earthy. Granulite appears Veined or Pebbled and Gritstone appears Layered and Foliated. The luster of Granulite is vitreous while that of Gritstone is dull. Granulite is available in black, brown 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 Granulite are curling, gemstone, laboratory bench tops, soil conditioner, 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.