Know all about Tachylite and Suevite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Suevite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Suevite is Earthy. Tachylite appears Glassy and Suevite appears Banded. The luster of Tachylite is resinous while that of Suevite is earthy. Tachylite is available in black, dark brown colors whereas Suevite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Suevite are as a feed additive for livestock, gemstone, metallurgical flux, source of magnesia (mgo).