Know all about Greywacke and Conglomerate properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke and Conglomerate belong to Sedimentary Rocks.Texture of Greywacke is Clastic whereas that of Conglomerate is Clastic. Greywacke appears Dull and Conglomerate appears Shiny and Rounded. The luster of Greywacke and Conglomerate is dull. 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 Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Conglomerate are cemetery markers, in aquifers, tombstones.