Know all about Nepheline Syenite and Diabase properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Diabase belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Diabase is Aphanitic, Granular. Nepheline Syenite appears Banded and Foilated and Diabase appears Vesicular. The luster of Nepheline Syenite is greasy to dull while that of Diabase is not available. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Diabase is available in dark grey to black colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.