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