World’s first commercially available transparent concrete Litracon Classic® is a combination of optical fibres and fine concrete. It can be produced as prefabricated building blocks. Due to the small size of the fibres, they blend into concrete becoming a component of the material like small pieces of aggregate. In this manner, the result is not only two materials - glass in concrete - mixed, but a third, new material, which is homogeneous in its inner structure and on its main surfaces as well. Litracon Classic® is a fully handmade product which results an exceptional and individual pattern of light in each piece. Litracon Classic® was listed among the most important inventions of year 2004 by TIME magazine.