I put two ceramic eggs in my boxes when I switched the girls to a new coop in November. I didn't mark them. I now can't figure out which two of my three tan eggs are my fakes! They spin the same, they sound the same when tapped, they scratch the same, they weigh the same, NONE are the same size as another, they're identically colored..... I don't know what to do! I don't have a flashlight bright enough to "candle" them. Any ideas??