June 18-20, 2021 Sublette County Rock Hounds’ annual gem & mineral show at the Sublette County Fairgrounds’ Event Center in Big Piney, Wyoming. During this Show the Rock Hounds will be hosting the annual conventions of the American Federation of Mineralogical Societies and the Rocky Mountain Federation of Mineralogical Societies. Rough rock, slabs, cabs, beads, jewelry-making supplies, fossils, and jewelry. Kids activities, fluorescent mineral display, demonstrators, exhibits, lectures, field trips, door prizes and raffles. Friday & Saturday 9-5, Sunday 9-4. Admission: $2.00 adults, children free. Food concessions on-site.