Know all about Diabase and Gneiss properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Gneiss belongs to Metamorphic Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Gneiss is Banded, Foliated, Platy. Diabase appears Vesicular and Gneiss appears Foliated. The luster of Diabase is not available while that of Gneiss is dull. Diabase is available in dark grey to black colors whereas Gneiss is available in black, brown, pink, red, white colors. The commercial uses of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Gneiss are cemetery markers, jewelry, tombstones, used in aquariums.