Know all about Tonalite and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Tonalite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Tonalite is Phaneritic whereas that of Gneiss is Banded, Foliated, Platy. Tonalite appears Banded and Foilated and Gneiss appears Foliated. The luster of Tonalite is subvitreous to dull while that of Gneiss is dull. Tonalite 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 Tonalite are cemetery markers, creating artwork and that of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.