Know all about Argillite and Conglomerate properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Conglomerate belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Conglomerate is Clastic. Argillite appears Rough and Dull and Conglomerate appears Shiny and Rounded. The luster of Argillite is waxy and dull while that of Conglomerate is dull. Argillite is available in dark grey to black, pink, red, white colors whereas Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Conglomerate are cemetery markers, in aquifers, tombstones.