Know all about Gneiss and Breccia properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Breccia belongs to Sedimentary Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Breccia is Brecciated, Clastic. Gneiss appears Foliated and Breccia appears Layered, Banded, Veined and Shiny. The luster of Gneiss is dull while that of Breccia is dull to pearly. Gneiss is available in black, brown, pink, red, white colors whereas Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Breccia are creating artwork, gemstone, jewelry.