Know all about Diorite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Diorite belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Diorite is Phaneritic whereas that of Flint is Banded, Rough. Diorite appears Shiny and Flint appears Glassy or Pearly. The luster of Diorite is shiny while that of Flint is vitreous. Diorite is available in black, brown, light to dark grey, white colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Diorite are creating artwork, curling 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.