Know all about Tachylite and Soapstone properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Soapstone belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Soapstone is Polished. Tachylite appears Glassy and Soapstone appears Dull, Banded and Foilated. The luster of Tachylite is resinous while that of Soapstone is greasy. Tachylite is available in black, dark brown colors whereas Soapstone is available in black, black to grey, green, grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo).