Know all about Theralite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Theralite and Hyaloclastite belong to Igneous Rocks.Texture of Theralite is Phaneritic whereas that of Hyaloclastite is Pyroclastic. Theralite appears Veined and Shiny and Hyaloclastite appears Dull. The luster of Theralite is waxy and dull while that of Hyaloclastite is dull and grainy. Theralite is available in dark grey to black colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Theralite and Hyaloclastite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.