Know all about Rhomb Porphyry and Alkali Feldspar Granite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Alkali Feldspar Granite belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Alkali Feldspar Granite is Phaneritic. Rhomb Porphyry appears Rough and Alkali Feldspar Granite appears Veined or Pebbled. The luster of Rhomb Porphyry is subvitreous to dull while that of Alkali Feldspar Granite is dull to grainy with sporadic parts pearly and vitreous. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Alkali Feldspar Granite is available in black, grey, orange, pink, white 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 Alkali Feldspar Granite are curling, gemstone, laboratory bench tops, tombstones.