Know all about Tachylite and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Claystone belongs to Sedimentary Rocks.Texture of Tachylite is Vitreous whereas that of Claystone is Clastic. Tachylite appears Glassy and Claystone appears Rough and Dull. The luster of Tachylite is resinous while that of Claystone is dull. Tachylite is available in black, dark brown colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Claystone are pottery.