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