Gold Counterfeiting Goes Viral: 10 Tungsten-Filled Gold Bars Are Discovered In Manhattan Posted on 06/08/2013 by Kun Be careful when buying gold bullion as some are Tungsten-filled gold bar. Source: http://www.zerohedge.com/news/2012-09-23/gold-counterfeiting-goes-viral-10-tungsten-filled-gold-bars-are-discovered-manhattan