Bubble-gum Charm

These chunky bubble-gummy beads are the same silze as real bubble-gum but they are made from some sort of stone/glass? I think it's dyed Quartz but I have found it very hard to find them again. I bought them in New York. If anyone know where I can get more?! The little tag says 'Yum-Yum' and is hand stamped in copper.

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