Know all about Trachyte and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte and Icelandite belong to Igneous Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Icelandite is Aphanitic to Porphyritic. Trachyte appears Banded and Icelandite appears Dull and Soft. The luster of Trachyte is metallic while that of Icelandite is vitreous. Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Trachyte and Icelandite are cemetery markers, creating artwork.