The Nolla jewelry series introduces renewable, innovative biomaterials to Kalevala Jewelry. Nolla jewelry is made from 100% recycled silver and a plant-based biomaterial developed in Finland. The colors of the biomaterial also come from nature: black from soot, blue from woad, and green from metal oxide. Designed by Taru Harmaala Chaloff, the jewelry series was inspired by Finland's endangered flowers, the Meadow Rue in particular. The Finnish name of the jewelry series "Nolla" means "Zero" in English.