Know all about Variolite and Nephelinite properties here. All properties of rocks are important as they define the type of rock and its application. Variolite and Nephelinite belong to Igneous Rocks.Texture of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Nephelinite is Aphanitic. Variolite appears Dull and Soft and Nephelinite appears Skeletal. The luster of Variolite is not available while that of Nephelinite is vitreous to metallic. Variolite is available in black, brown, light to dark grey colors whereas Nephelinite is available in black, brown, colourless, green, grey, white colors. The commercial uses of Variolite are cemetery markers, creating artwork and that of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo).