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