Know all about Variolite and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Variolite and Trachyte belong to Igneous Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Trachyte is Aphanitic to Porphyritic. Variolite appears Dull and Soft and Trachyte appears Banded. The luster of Variolite is not available while that of Trachyte is metallic. Variolite is available in black, brown, light to dark grey colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Variolite and Trachyte are cemetery markers, creating artwork.