Know all about Diabase and Nepheline Syenite properties here. All properties of rocks are important as they define the type of rock and its application. Diabase and Nepheline Syenite belong to Igneous Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Nepheline Syenite is Granular. Diabase appears Vesicular and Nepheline Syenite appears Banded and Foilated. The luster of Diabase is not available while that of Nepheline Syenite is greasy to dull. Diabase is available in dark grey to black colors whereas Nepheline Syenite is available in brown, buff, cream, green, grey, pink, 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 Nepheline Syenite are cemetery markers, creating artwork.