Radioactive Bats Halloween clay slice sprinkles. THESE GLOW IN THE DARK! Just expose to light for a few seconds and look at it in the dark. You will get a 5 gram bag by weight, not a jar. Great for arts and crafts and diy projects, resin, etc.  Can work for nails but they are on the thick side! Please conduct your own testing before using in final project. Not edible.. See how big a 5 gram bag is at this link: click here