Know all about Blueschist and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Chalk belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Chalk is Clastic or Non-Clastic. Blueschist appears Dull and Banded and Chalk appears Soft. The luster of Blueschist and Chalk is dull. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper.