Forget armed robbery. What is it when go to the beach and you find something shiny beneath the surface, and it turns out to be silver jewelry with these fine dark garnet stones intricately placed into a swirling pattern that you only recognize as beautiful -- What is it when your brother takes it from you and trades it away for some pokemon cards? What is it when your parents take it from you and invest it in a bond? What is it when the kid next to you sees it in your hand and takes it from you before anyone else knows you were the proper claimant?