Know all about Gneiss and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Gritstone is Earthy. Gneiss appears Foliated and Gritstone appears Layered and Foliated. The luster of Gneiss and Gritstone is dull. Gneiss is available in black, brown, pink, red, 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 Gneiss are cemetery markers, jewelry, tombstones, used in aquariums 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.