Know all about Gneiss and Harzburgite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Harzburgite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Harzburgite is Phaneritic. Gneiss appears Foliated and Harzburgite appears Rough and Shiny. The luster of Gneiss is dull while that of Harzburgite is shiny. Gneiss is available in black, brown, pink, red, white colors whereas Harzburgite is available in dark greenish - grey colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.