Know all about Tachylite and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Websterite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Tachylite appears Glassy and Websterite appears Layered, Banded, Veined and Shiny. The luster of Tachylite is resinous while that of Websterite is dull to vitreous to submetallic. Tachylite is available in black, dark brown colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.