Know all about Icelandite and Hawaiite properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite and Hawaiite belong to Igneous Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Hawaiite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Icelandite appears Dull and Soft and Hawaiite appears Dull and Soft. The luster of Icelandite is vitreous while that of Hawaiite is not available. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Hawaiite is available in black, brown, light to dark grey colors. The commercial uses of Icelandite are cemetery markers, creating artwork and that of Hawaiite are creating artwork, sea defence.