Know all about Nepheline Syenite and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Picrite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Picrite is Earthy, Rough. Nepheline Syenite appears Banded and Foilated and Picrite appears Rough and Shiny. The luster of Nepheline Syenite is greasy to dull while that of Picrite is subvitreous to dull. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).