Know all about Blueschist and Picrite properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Picrite belongs to Igneous Rocks.Texture of Blueschist is Foliated whereas that of Picrite is Earthy, Rough. Blueschist appears Dull and Banded and Picrite appears Rough and Shiny. The luster of Blueschist is dull while that of Picrite is subvitreous to dull. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo).