Know all about Gneiss and Hornblendite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Hornblendite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Hornblendite is Banded, Foliated, Massive. Gneiss appears Foliated and Hornblendite appears Foliated. The luster of Gneiss is dull while that of Hornblendite is vitreous to dull. Gneiss is available in black, brown, pink, red, white colors whereas Hornblendite is available in black, brown, green, grey colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Hornblendite are cemetery markers, commemorative tablets, creating artwork.