Know all about Oolite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Oolite belongs to Sedimentary Rocks while Icelandite belongs to Igneous Rocks.Texture of Oolite is Clastic or Non-Clastic whereas that of Icelandite is Aphanitic to Porphyritic. Oolite appears Rounded and Rough and Icelandite appears Dull and Soft. The luster of Oolite is pearly to shiny while that of Icelandite is vitreous. Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Oolite are creating artwork, jewelry, used in aquariums and that of Icelandite are cemetery markers, creating artwork.