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