Know all about Conglomerate and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Conglomerate belongs to Sedimentary Rocks while Icelandite belongs to Igneous Rocks.Texture of Conglomerate is Clastic whereas that of Icelandite is Aphanitic to Porphyritic. Conglomerate appears Shiny and Rounded and Icelandite appears Dull and Soft. The luster of Conglomerate is dull while that of Icelandite is vitreous. Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Conglomerate are cemetery markers, in aquifers, tombstones and that of Icelandite are cemetery markers, creating artwork.