Know all about Flint and Diabase properties here. All properties of rocks are important as they define the type of rock and its application. Flint belongs to Sedimentary Rocks while Diabase belongs to Igneous Rocks.Texture of Flint is Banded, Rough whereas that of Diabase is Aphanitic, Granular. Flint appears Glassy or Pearly and Diabase appears Vesicular. The luster of Flint is vitreous while that of Diabase is not available. Flint is available in black, brown, green, grey, red, white colors whereas Diabase is available in dark grey to black 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 Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.