to find out if all this glitter was from the same source, investigators sent it to edwin jones, a forensiccientist with one of the largest collections of glitter in the world, with close to 1,000 specimens. >> i have an unusual hobby of collecting micro things, and i've been collecting glitter for many years before this case and i've been collecting glitter since this case. >> under a microscope, jones discovered that this red glitter was a hexagon shape, approximately 250 microns. >> it's red on one side and silver on the other. it was a very unique type of glitter that just this one company had made. >> jones discovered that this glitter was not a bestselling item. only 10,000 bottles had ever been made. investigators learned that during the fourth of july party megan attended, the host threw red glitter on everyone, including megan. >> i said, do you still have the bottle? she says, "yes, i do." so, we then went and recovered the remaining portion of the glitter. >> scientists confirmed the glitter in megan barroso's hair came from megan's friend, and it was the same glitter found in sa