The Green Gold Series are typically sold in Europe and very difficult to find in the States. This will be a limited time product listing until inventory is gone. Only 40 units available. Valcambi Green Gold is a premium quality product. Its origins are fully documented and independently validated. Valcambi Green Gold is sourced only from mines which adhere to the highest standards of environmental stewardship, and to the health and safety, and the human rights of their labour force. The handling and processing of Green Gold by Valcambi is entirely segregated within our plant, from the point of arrival through to refining (using specially dedicated crucibles and electrolytic refining banks), through the continuous casting process using dedicated crucibles, to the manufacturing of cast, minted, and semi-finished products. The entire Green Gold supply chain is under the control of independent supervisory and auditing processes. Valcambi guarantees the very highest standards for Valcambi Green Gold.