Not only are these spheres are a bright yellow colour in normal light and turn a super bright neon-green under UV light (very effective in a club with blacklights!) but these spheres are also phosphorescent, meaning there is an afterglow in the dark once the light are off. These are completely safe to wear as the amount of uranium locked within the sphere is less than the average sunny day would expose you to. There are kits available for the pendants in the listing. Check out my kit section for more details.
