Know all about Icelandite and Diabase properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite and Diabase belong to Igneous Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Diabase is Aphanitic, Granular. Icelandite appears Dull and Soft and Diabase appears Vesicular. The luster of Icelandite is vitreous while that of Diabase is not available. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Diabase is available in dark grey to black colors. The commercial uses of Icelandite are cemetery markers, creating artwork and that of Diabase are an oil and gas reservoir, cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.