Know all about Rhomb Porphyry and Blueschist properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry belongs to Igneous Rocks while Blueschist belongs to Metamorphic Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Blueschist is Foliated. Rhomb Porphyry appears Rough and Blueschist appears Dull and Banded. The luster of Rhomb Porphyry is subvitreous to dull while that of Blueschist is dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Blueschist is available in blue, bluish - grey, purple, shades of blue 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 Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.