Know all about Scoria and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Scoria and Rapakivi Granite belong to Igneous Rocks.Texture of Scoria is Vesicular whereas that of Rapakivi Granite is Granular, Phaneritic. Scoria appears Glassy and Vesicular and Rapakivi Granite appears Veined or Pebbled. The luster of Scoria is subvitreous to dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Scoria is available in black, brown, dark grey to black, red colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.