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