Know all about Shale and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Shale belongs to Sedimentary Rocks while Rapakivi Granite belongs to Igneous Rocks.Texture of Shale is Clastic, Splintery whereas that of Rapakivi Granite is Granular, Phaneritic. Shale appears Muddy and Rapakivi Granite appears Veined or Pebbled. The luster of Shale is dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Shale is available in black, brown, buff, green, grey, red, yellow colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Shale are creating artwork, pottery and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.