Know all about Rhyolite and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Gneiss is Banded, Foliated, Platy. Rhyolite appears Banded and Gneiss appears Foliated. The luster of Rhyolite is earthy while that of Gneiss is dull. Rhyolite is available in grey, white, light black colors whereas Gneiss is available in black, brown, pink, red, white colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.