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