Radioactive Dice

For a half life investigation, I 3D printed a set of 100 of these "radioactive" dice for each of the lab stations in my room. The primary benefit over standard 6-sided dice is since each die only has one non-black side, it is very easy to determine when each one has "decayed". It also allowed me to make each set a different color so that I could easily reunite any dice that were found on the floor without having to count each set to figure out which one is missing. While it seems