Know all about Rhomb Porphyry and Larvikite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Larvikite belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Larvikite is Phaneritic. Rhomb Porphyry appears Rough and Larvikite appears Shiny. The luster of Rhomb Porphyry and Larvikite is subvitreous to dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Larvikite is available in black, brown, light to dark grey, 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 Larvikite are cemetery markers, commemorative tablets, creating artwork.