Know all about Granulite and Variolite properties here. All properties of rocks are important as they define the type of rock and its application. Granulite belongs to Metamorphic Rocks while Variolite belongs to Igneous Rocks.Texture of Granulite is Granoblastic whereas that of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Granulite appears Veined or Pebbled and Variolite appears Dull and Soft. The luster of Granulite is vitreous while that of Variolite is not available. Granulite is available in black, brown colors whereas Variolite is available in black, brown, light to dark grey colors. The commercial uses of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones and that of Variolite are cemetery markers, creating artwork.