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