Know all about Flint and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Flint belongs to Sedimentary Rocks while Trachyte belongs to Igneous Rocks.Texture of Flint is Banded, Rough whereas that of Trachyte is Aphanitic to Porphyritic. Flint appears Glassy or Pearly and Trachyte appears Banded. The luster of Flint is vitreous while that of Trachyte is metallic. Flint is available in black, brown, green, grey, red, white colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white 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 Trachyte are cemetery markers, creating artwork.