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