The Oluce Stones 215 outdoor lamps are designed by Marta Laudani & Marco Romanelli in 2002. They are made of polyethylene in the form of a stone. Oluce offers the "Stones" in three sizes. This variant, the Stones 215, is the largest of the three outdoor lighting. There is also the family of lamps "Stone of Glass" for indoor use. The Oluce Stones lights can all be operated with an energy-saving lamps and have the protection class IP65 (sprayed-proof for outdoor use).