The Perfect Thing for Forensics

Nuclear testing between 1952 and 1963 caused a massive spike in the carbon-14 isotope. You can tell when something died by comparing how much carbon-14 in their body to what they call the bomb curve. So if someone comes and assaults you or murders you, you should always keep a little box of glitter. Do you know what the perfect thing for forensics is? Apparently, it's glitter.