Know all about Rhyodacite and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyodacite and Rapakivi Granite belong to Igneous Rocks.Texture of Rhyodacite is Earthy whereas that of Rapakivi Granite is Granular, Phaneritic. Rhyodacite appears Skeletal and Rapakivi Granite appears Veined or Pebbled. The luster of Rhyodacite is greasy to dull while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Rhyodacite is available in black to grey, dark greenish - grey colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Rhyodacite are cemetery markers, creating artwork and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.