Know all about Picrite and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite and Rapakivi Granite belong to Igneous Rocks.Texture of Picrite is Earthy, Rough whereas that of Rapakivi Granite is Granular, Phaneritic. Picrite appears Rough and Shiny and Rapakivi Granite appears Veined or Pebbled. The luster of Picrite is subvitreous to dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Picrite is available in black, brown, colourless, green, grey, pink, white, yellow colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.