Know all about Siltstone and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Siltstone and Flint belong to Sedimentary Rocks.Texture of Siltstone is Clastic whereas that of Flint is Banded, Rough. Siltstone appears Rough and Flint appears Glassy or Pearly. The luster of Siltstone is dull while that of Flint is vitreous. Siltstone is available in brown, red, reddish brown colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Siltstone are raw material for the manufacture of mortar, soil conditioner 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.