Know all about Greywacke and Kimberlite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Kimberlite belongs to Igneous Rocks.Texture of Greywacke is Clastic whereas that of Kimberlite is Porphyritic. Greywacke appears Dull and Kimberlite appears Dull and Banded. The luster of Greywacke is dull while that of Kimberlite is subvitreous to 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 Kimberlite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Kimberlite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).