Over the years, we have periodically reported of the occasional gold bar discovered as counterfeit in Manhattan's Diamond District which instead of containing the yellow precious metal would instead be filled with gold-plated tungsten or in some cases copper. The news would spark a brief wave of outrage, prompting physical gold holders to run ultrasound spot checks of their inventory, at which point interest would wane and why not: buyer, after all, beware in gold as in every other market, and if someone is spending thousands to buy fake gold, well that's Darwinism in action. Yet one market which seemed stubbornly ... (full story)