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