Know all about Variolite and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Variolite and Scoria belong to Igneous Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Scoria is Vesicular. Variolite appears Dull and Soft and Scoria appears Glassy and Vesicular. The luster of Variolite is not available while that of Scoria is subvitreous to dull. Variolite is available in black, brown, light to dark grey colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.