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