Know all about Rhomb Porphyry and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Picrite belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Picrite is Earthy, Rough. Rhomb Porphyry appears Rough and Picrite appears Rough and Shiny. The luster of Rhomb Porphyry and Picrite is subvitreous to dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow 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 Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).