Know all about Greywacke and Whiteschist properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Whiteschist belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Whiteschist is Foliated. Greywacke appears Dull and Whiteschist appears Banded and Foilated. The luster of Greywacke is dull while that of Whiteschist is subvitreous to dull. Greywacke and Whiteschist are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Whiteschist are creating artwork, gemstone, jewelry, production of lime.