Know all about Itacolumite and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Itacolumite belongs to Sedimentary Rocks while Rapakivi Granite belongs to Igneous Rocks.Texture of Itacolumite is Clastic, Granular, Rough whereas that of Rapakivi Granite is Granular, Phaneritic. Itacolumite appears Rough and Rapakivi Granite appears Veined or Pebbled. The luster of Itacolumite is dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Itacolumite is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Itacolumite are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.