Dirty Gold, Clean Cash Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email Gold bullion is invoiced prior to testing for purity at a trading house in downtown Miami’s jewelry and diamond district on Dec. 12, 2014. ( Max Reed For the Miami Herald ) Produced by Oliver Lazarus Hosted by Todd Zwillich Produced by PRI and WNYC