If it's in jewelry, then it could be in buttons, eyelets, any of those inexpensive tools that you find at discount stores and online import shops. Everywhere. Cadmium makes lovely permanent color pigments in artists paint, but only in professional grade paints, and even then, it's only sold in child-proof jars with lots of warnings on the label. What are the odds of a child chewing on an oil painting, versus a button or charm on a necklace? And if it's bad for children, how about adult? Those $12 pierced earring my 6 year old got for Christmas that made her ears hurt - wonder why? And where CAN I find safe earring for her to wear? How do I know?