Know all about Flint and Rhomb 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 Rhomb Porphyry belongs to Igneous Rocks.Texture of Flint is Banded, Rough whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Flint appears Glassy or Pearly and Rhomb Porphyry appears Rough. The luster of Flint is vitreous while that of Rhomb Porphyry is subvitreous to dull. Flint is available in black, brown, green, grey, red, white colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, 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 Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).