Set of one 18k yellow gold and four 18k grey gold rings with a twisted design, made with recycled gold.gold is a precious material that is malleable and highly sensitive to scratching. The product is expected to evolve and present marks throughout its lifecycle. Moreover, as gold is a soft alloy, pieces should not be stacked one on top of the other to avoid damaging them. every piece of jewelry must be stored in its original packaging to avoid any friction with other objects that could scratch it. When part of a set, pieces must be stocked separately.