Know all about Diabase and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Diabase belongs to Igneous Rocks while Chert belongs to Sedimentary Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Chert is Banded, Rough. Diabase appears Vesicular and Chert appears Glassy or Pearly. The luster of Diabase is not available while that of Chert is waxy and dull. Diabase is available in dark grey to black colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.