Know all about Rapakivi Granite and Diatomite 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 Diatomite belongs to Sedimentary Rocks.Texture of Rapakivi Granite is Granular, Phaneritic whereas that of Diatomite is Clastic or Non-Clastic. Rapakivi Granite appears Veined or Pebbled and Diatomite appears Soft. The luster of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous while that of Diatomite is dull. Rapakivi Granite is available in black, grey, orange, pink, white colors whereas Diatomite is available in grey, white, yellow colors. The commercial uses of Rapakivi Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones and that of Diatomite are alumina refineries, animal feed filler, as a feed additive for livestock, creating artwork, drawing on blackboards, fire resistant, gymnasts, athletes and mountain climbers use for grip, in aquifers, soil conditioner, to ignite fire, used as a filter medium, used as an insecticide, whiting material in toothpaste, paint and paper.