Know all about Gneiss and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Gneiss belongs to Metamorphic Rocks while Hawaiite belongs to Igneous Rocks.Texture of Gneiss is Banded, Foliated, Platy whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Gneiss appears Foliated and Hawaiite appears Dull and Soft. The luster of Gneiss is dull while that of Hawaiite is not available. Gneiss is available in black, brown, pink, red, white colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums and that of Hawaiite are creating artwork, sea defence.