Know all about Blueschist and Itacolumite properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Itacolumite belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Itacolumite is Clastic, Granular, Rough. Blueschist appears Dull and Banded and Itacolumite appears Rough. The luster of Blueschist and Itacolumite is dull. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Itacolumite is 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 Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones.