Know all about Tachylite and Metapelite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Metapelite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Metapelite is Foliated. Tachylite appears Glassy and Metapelite appears Banded. The luster of Tachylite is resinous while that of Metapelite is earthy. Tachylite is available in black, dark brown colors whereas Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Metapelite are commemorative tablets, creating artwork.