Translucent concrete is made of fine-grained concrete and translucent fabric which is cast layer-by-layer in prefabricated moulds. Since the proportion of synthetic fibre is relatively low and because these individual fibres have a small diameter, translucent concrete has the same strength and durability as conventional concrete.

The virtually lossless light conduction through the optical fibres allows light, shadows or even colours to be seen through the concrete – even through thick walls. Luccon is produced in lava grey and delivered as prefabricated sheets.