Know all about Diatomite and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Aplite belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Aplite is Granular, Graphic. Diatomite appears Soft and Aplite appears Veined or Pebbled. The luster of Diatomite is dull while that of Aplite is dull to pearly to subvitreous. Diatomite is available in grey, white, yellow colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses 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 and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.