Know all about Granulite and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Granulite belongs to Metamorphic Rocks while Porphyry belongs to Igneous Rocks.Texture of Granulite is Granoblastic whereas that of Porphyry is Porphyritic. Granulite appears Veined or Pebbled and Porphyry appears Dull. The luster of Granulite is vitreous while that of Porphyry is dull. Granulite is available in black, brown colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones and that of Porphyry are creating artwork, gemstone, jewelry.