Know all about Teschenite and Hyaloclastite properties here. All properties of rocks are important as they define the type of rock and its application. Teschenite and Hyaloclastite belong to Igneous Rocks.Texture of Teschenite is Phaneritic whereas that of Hyaloclastite is Pyroclastic. Teschenite appears Veined and Shiny and Hyaloclastite appears Dull. The luster of Teschenite is not available while that of Hyaloclastite is dull and grainy. Teschenite is available in dark grey to black colors whereas Hyaloclastite is available in brown, grey, yellow colors. The commercial uses of Teschenite and Hyaloclastite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.