Know all about Granulite and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Granulite belongs to Metamorphic Rocks while Argillite belongs to Sedimentary Rocks.Texture of Granulite is Granoblastic whereas that of Argillite is Clastic, Polished. Granulite appears Veined or Pebbled and Argillite appears Rough and Dull. The luster of Granulite is vitreous while that of Argillite is waxy and dull. Granulite is available in black, brown colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones and that of Argillite are fire resistant, used to manufracture paperweights and bookends.