Know all about Tachylite and Eclogite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Eclogite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Eclogite is Earthy. Tachylite appears Glassy and Eclogite appears Dull, Banded and Foilated. The luster of Tachylite is resinous while that of Eclogite is subvitreous to dull. Tachylite is available in black, dark brown colors whereas Eclogite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Eclogite are creating artwork, gemstone.