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