Know all about Blue Granite and Chalk properties here. All properties of rocks are important as they define the type of rock and its application. Blue Granite belongs to Igneous Rocks while Chalk belongs to Sedimentary Rocks.Texture of Blue Granite is Phaneritic whereas that of Chalk is Clastic or Non-Clastic. Blue Granite appears Shiny and Chalk appears Soft. The luster of Blue Granite is subvitreous to dull while that of Chalk is dull. Blue Granite is available in black, brown, light to dark grey, white colors whereas Chalk is available in grey, white, yellow colors. The commercial uses of Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling 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.