Know all about Dolomite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Dolomite belongs to Sedimentary Rocks while Icelandite belongs to Igneous Rocks.Texture of Dolomite is Earthy whereas that of Icelandite is Aphanitic to Porphyritic. Dolomite appears Glassy or Pearly and Icelandite appears Dull and Soft. The luster of Dolomite is vitreous and pearly while that of Icelandite is vitreous. Dolomite is available in black, brown, colourless, green, grey, pink, white colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Icelandite are cemetery markers, creating artwork.