Know all about Chalk and Travertine properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Travertine belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Travertine is Banded. Chalk appears Soft and Travertine appears Fibrous. The luster of Chalk is dull while that of Travertine is dull to pearly. Chalk is available in grey, white, yellow colors whereas Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors. The commercial uses 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 and that of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery.