Know all about Scoria and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Flint is Banded, Rough. Scoria appears Glassy and Vesicular and Flint appears Glassy or Pearly. The luster of Scoria is subvitreous to dull while that of Flint is vitreous. Scoria is available in black, brown, dark grey to black, red colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills 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.