Carefully thought out and executed design techniques created by man and nature, the exclusive, upscale Piastra collection consists of 2 overlapping iron plates, each 3mm thick, with indirect light. The rear plate is decorated with gold, silver, or copper leaf that is applied by hand. The front iron plate is naturally rusted by means of wetting and drying cycles taken place both indoors and outdoors for over 21 days giving each rusted slab of iron it's own unique finish.