Know all about Troctolite and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Troctolite and Rapakivi Granite belong to Igneous Rocks.Texture of Troctolite is Phaneritic whereas that of Rapakivi Granite is Granular, Phaneritic. Troctolite appears Veined and Shiny and Rapakivi Granite appears Veined or Pebbled. The luster of Troctolite is not available while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Troctolite is available in dark grey to black colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.