Know all about Rhomb Porphyry and Gabbro properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Gabbro belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Gabbro is Phaneritic. Rhomb Porphyry appears Rough and Gabbro appears Veined and Shiny. The luster of Rhomb Porphyry is subvitreous to dull while that of Gabbro is not available. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Gabbro is available in dark grey to black colors. The commercial uses of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo) and that of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.