Know all about Diatomite and Rhomb Porphyry properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Rhomb Porphyry belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Rhomb Porphyry is Aphanitic to Porphyritic. Diatomite appears Soft and Rhomb Porphyry appears Rough. The luster of Diatomite is dull while that of Rhomb Porphyry is subvitreous to dull. Diatomite is available in grey, white, yellow colors whereas Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Diatomite are alumina refineries, animal feed filler, as a feed additive for livestock, creating artwork, drawing on blackboards, fire resistant, gymnasts, athletes and mountain climbers use for grip, in aquifers, soil conditioner, to ignite fire, used as a filter medium, used as an insecticide, whiting material in toothpaste, paint and paper 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).