Know all about Argillite and Peridotite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite belongs to Sedimentary Rocks while Peridotite belongs to Igneous Rocks.Texture of Argillite is Clastic, Polished whereas that of Peridotite is Phaneritic. Argillite appears Rough and Dull and Peridotite appears Rough and Shiny. The luster of Argillite is waxy and dull while that of Peridotite is shiny. Argillite is available in dark grey to black, pink, red, white colors whereas Peridotite is available in dark greenish - grey colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.