Know all about Gneiss and Sovite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Sovite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Sovite is Granular, Poikiloblastic. Gneiss appears Foliated and Sovite appears Dull, Banded and Foilated. The luster of Gneiss is dull while that of Sovite is subvitreous to dull. Gneiss is available in black, brown, pink, red, white colors whereas Sovite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Sovite are an oil and gas reservoir, as a feed additive for livestock, creating artwork, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).