Know all about Variolite and Oolite properties here. All properties of rocks are important as they define the type of rock and its application. Variolite belongs to Igneous Rocks while Oolite belongs to Sedimentary Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Oolite is Clastic or Non-Clastic. Variolite appears Dull and Soft and Oolite appears Rounded and Rough. The luster of Variolite is not available while that of Oolite is pearly to shiny. Variolite is available in black, brown, light to dark grey colors whereas Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Oolite are creating artwork, jewelry, used in aquariums.