Know all about Gossan and Rapakivi Granite properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Rapakivi Granite belongs to Igneous Rocks.Texture of Gossan is Rough, Sandy whereas that of Rapakivi Granite is Granular, Phaneritic. Gossan appears Dull and Banded and Rapakivi Granite appears Veined or Pebbled. The luster of Gossan is metallic while that of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous. Gossan is available in brown, brown- black, gold, green, rust colors whereas Rapakivi Granite is available in black, grey, orange, pink, white colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.