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