Know all about Tachylite and Luxullianite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Luxullianite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Luxullianite is Granular, Phaneritic. Tachylite appears Glassy and Luxullianite appears Veined or Pebbled. The luster of Tachylite is resinous while that of Luxullianite is dull to grainy with sporadic parts pearly and vitreous. Tachylite is available in black, dark brown colors whereas Luxullianite is available in black, grey, orange, pink, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Luxullianite are creating artwork, curling, gemstone, laboratory bench tops, tombstones.