Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Suevite Uses. We have provided you with all information about Suevite rock here. During the impact melted material forming a breccia containing glass and crystal or lithic fragments together form Suevite rock.. Suevite is available in black, brown, colourless, green, grey, pink colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Suevite is light to dark brown. Get to know more about Suevite rock and characteristics of Suevite rock in the next sections.