Probably those "Chinese super counterfeits" that they talked about a lot like 5+ years ago. Archive: From the post: >>Patricia Miller was helping another customer when a smooth-talking gentleman came in and quickly grabbed some crystals that he said were a gift for his mom. “He was trying to small talk with me about how wonderful of a person he was, because he’s getting them for her,” Miller told Cowboy State Daily. “And he’s going to print out information about each one of them, and all this other stuff.” Miller thought that was sweet and said so, but what happened next was anything but sweet. “He handed me this $100 bill, and I could feel that something was different,” she said. “And I was looking at it, and I’m like, ‘Well, maybe it’s old?'”