With the material box - the first sustainable jewelery case - the perfect piece of jewelry is given away! The customers develop, according to an innovative design system, individual jewelery, wedding and engagement rings from Eco + Fairtrade certified gold and silver with ethical gemstones. In the M-Box, the raw materials are given away first. If the taste was not exactly met, the recipient can still shape their jewelry. Before he is made to measure: 100% Handmade in Hamburg!