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