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