“Fossick” is a term that became popular with 19th-century Aussies and Kiwis who picked over abandoned mining excavations to search for gold or gemstones. In Australia, “fossicking” is protected by a number of laws that vary from state to state. For example, in Queensland, fossickers must obtain a license, but in New South Wales, there is no such requirement. Interestingly, searching for opal has its own specific term: “noodling,” which is also a term for catfish fishing in the southern United States.