Know all about Trachyte and Gritstone properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte belongs to Igneous Rocks while Gritstone belongs to Sedimentary Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Gritstone is Earthy. Trachyte appears Banded and Gritstone appears Layered and Foliated. The luster of Trachyte is metallic while that of Gritstone is dull. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, 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 Trachyte are cemetery markers, creating artwork 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.