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