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