Know all about Flint and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Flint belongs to Sedimentary Rocks while Picrite belongs to Igneous Rocks.Texture of Flint is Banded, Rough whereas that of Picrite is Earthy, Rough. Flint appears Glassy or Pearly and Picrite appears Rough and Shiny. The luster of Flint is vitreous while that of Picrite is subvitreous to dull. Flint is available in black, brown, green, grey, red, white colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, 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 Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).