Know all about Diabase and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Diabase and Rhomb Porphyry belong to Igneous Rocks.Texture of Diabase is Aphanitic, Granular whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Diabase appears Vesicular and Rhomb Porphyry appears Rough. The luster of Diabase is not available while that of Rhomb Porphyry is subvitreous to dull. Diabase is available in dark grey to black colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, 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 Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo).