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