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