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