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