Know all about Gritstone and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Gritstone belongs to Sedimentary Rocks while Aplite belongs to Igneous Rocks.Texture of Gritstone is Earthy whereas that of Aplite is Granular, Graphic. Gritstone appears Layered and Foliated and Aplite appears Veined or Pebbled. The luster of Gritstone is dull while that of Aplite is dull to pearly to subvitreous. 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 Aplite 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 Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.