I was sorting through some granite samples in the lab yesterday. My hand slipped and I knocked over a tray of labeled specimens. Now all the little rocks are mixed together on the floor. I tried to pick them up, but I can't remember which piece came from where. The labels are smudged from the water I used to clean the mess. How do I even begin to sort them out again? Is there a trick to telling similar rocks apart? I feel like I ruined weeks of work in one clumsy moment. Maybe I should have used a better storage system from the start?