Know all about Alkali Feldspar Granite and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Alkali Feldspar Granite belongs to Igneous Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Alkali Feldspar Granite is Phaneritic whereas that of Gritstone is Earthy. Alkali Feldspar Granite appears Veined or Pebbled and Gritstone appears Layered and Foliated. The luster of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous while that of Gritstone is dull. Alkali Feldspar Granite 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 Alkali Feldspar Granite are 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.