The Ulexite, also known as 'the TV stone', is a mineral of sodium and calcium which has silky white crystalline appearance. Natural fibers of Oylexiti act like optical fibers, and conduct the light along the major routes through internal reflectance. When a piece of Oylexiti has flat surfaces polished perpendicular to the orientation of fibers, can display crystal clear a picture from one side to the other, as shown in the video.