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