Know all about Luxullianite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Luxullianite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Luxullianite is Granular, Phaneritic whereas that of Greywacke is Clastic. Luxullianite appears Veined or Pebbled and Greywacke appears Dull. The luster of Luxullianite is dull to grainy with sporadic parts pearly and vitreous while that of Greywacke is dull. Luxullianite is available in black, grey, orange, pink, white colors whereas Greywacke is 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 Luxullianite are creating artwork, curling, gemstone, laboratory bench tops, tombstones and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.