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