Know all about Nepheline Syenite and Rhyolite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Rhyolite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Rhyolite is Aphanitic, Glassy, Porphyritic. Nepheline Syenite appears Banded and Foilated and Rhyolite appears Banded. The luster of Nepheline Syenite is greasy to dull while that of Rhyolite is earthy. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Rhyolite is available in grey, white, light black colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Rhyolite are gemstone, laboratory bench tops, jewelry.