Know all about Greywacke and Soapstone properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Soapstone belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Soapstone is Polished. Greywacke appears Dull and Soapstone appears Dull, Banded and Foilated. The luster of Greywacke is dull while that of Soapstone is greasy. 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 Soapstone is available in black, black to grey, green, grey colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo).