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