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