Know all about Flint and Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Flint belongs to Sedimentary Rocks while Porphyry belongs to Igneous Rocks.Texture of Flint is Banded, Rough whereas that of Porphyry is Porphyritic. Flint appears Glassy or Pearly and Porphyry appears Dull. The luster of Flint is vitreous while that of Porphyry is dull. Flint is available in black, brown, green, grey, red, white colors whereas Porphyry is available in black, brown, colourless, green, grey, red, rust, white colors. The commercial uses of Flint and Porphyry are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.