Know all about Diatomite and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Diatomite belongs to Sedimentary Rocks while Scoria belongs to Igneous Rocks.Texture of Diatomite is Clastic or Non-Clastic whereas that of Scoria is Vesicular. Diatomite appears Soft and Scoria appears Glassy and Vesicular. The luster of Diatomite is dull while that of Scoria is subvitreous to dull. Diatomite is available in grey, white, yellow colors whereas Scoria is available in black, brown, dark grey to black, red 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 Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.