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