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