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