Know all about Icelandite and Pyrolite properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite and Pyrolite belong to Igneous Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Pyrolite is Phaneritic. Icelandite appears Dull and Soft and Pyrolite appears Rough and Shiny. The luster of Icelandite is vitreous while that of Pyrolite is shiny. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Pyrolite is available in dark greenish - grey colors. The commercial uses of Icelandite are cemetery markers, creating artwork and that of Pyrolite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.