Know all about Greywacke and Travertine properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke and Travertine belong to Sedimentary Rocks.Texture of Greywacke is Clastic whereas that of Travertine is Banded. Greywacke appears Dull and Travertine appears Fibrous. The luster of Greywacke is dull while that of Travertine is dull to pearly. Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery.