Know all about Nepheline Syenite and Theralite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Theralite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Theralite is Phaneritic. Nepheline Syenite appears Banded and Foilated and Theralite appears Veined and Shiny. The luster of Nepheline Syenite is greasy to dull while that of Theralite is waxy and dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Theralite is available in dark grey to black colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Theralite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.