Know all about Ganister and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Ganister belongs to Sedimentary Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Ganister is Clastic, Granular, Rough whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Ganister appears Rough and Rhomb Porphyry appears Rough. The luster of Ganister is dull while that of Rhomb Porphyry is subvitreous to dull. Ganister and Rhomb Porphyry are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones 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).