Know all about Variolite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Variolite belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Flint is Banded, Rough. Variolite appears Dull and Soft and Flint appears Glassy or Pearly. The luster of Variolite is not available while that of Flint is vitreous. Variolite is available in black, brown, light to dark grey colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.