Know all about Greywacke and Serpentinite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Serpentinite belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Serpentinite is Earthy. Greywacke appears Dull and Serpentinite appears Rough and Dull. The luster of Greywacke is dull while that of Serpentinite is waxy and dull. Greywacke and Serpentinite 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 Serpentinite are commemorative tablets, creating artwork.