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