Know all about Breccia and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Breccia and Argillite belong to Sedimentary Rocks.Texture of Breccia is Brecciated, Clastic whereas that of Argillite is Clastic, Polished. Breccia appears Layered, Banded, Veined and Shiny and Argillite appears Rough and Dull. The luster of Breccia is dull to pearly while that of Argillite is waxy and dull. Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Breccia are creating artwork, gemstone, jewelry and that of Argillite are fire resistant, used to manufracture paperweights and bookends.