Know all about Tuff and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Tuff and Icelandite belong to Igneous Rocks.Texture of Tuff is Clastic, Pyroclastic whereas that of Icelandite is Aphanitic to Porphyritic. Tuff appears Dull, Vesicular and Foilated and Icelandite appears Dull and Soft. The luster of Tuff is vitreous to dull while that of Icelandite is vitreous. Tuff is available in brown, grey, yellow colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Tuff are creating artwork and that of Icelandite are cemetery markers, creating artwork.