Know all about Gneiss and Pegmatite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Pegmatite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Pegmatite is Pegmatitic. Gneiss appears Foliated and Pegmatite appears Layered, Banded, Veined and Shiny. The luster of Gneiss is dull while that of Pegmatite is grainy, pearly and vitreous. Gneiss is available in black, brown, pink, red, white colors whereas Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz.