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