Know all about Nepheline Syenite and Diorite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Diorite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Diorite is Phaneritic. Nepheline Syenite appears Banded and Foilated and Diorite appears Shiny. The luster of Nepheline Syenite is greasy to dull while that of Diorite is shiny. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Diorite is available in black, brown, light to dark grey, white colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Diorite are creating artwork, curling.