GIGM SHOWS consists of 4 Tucson Gem & Mineral Shows. The Howard Johnson Gem & Mineral Show was Tucson's first gem show! The Globex/Days Inn, Clarion, and Grant Inn shows round out our fine series of shows. Exhibitors from around the world bring the best and most interesting gems, minerals, fossils, and jewelry to Tucson each winter. Shows typically run from late January to mid February.Tucson's mild temperatures and weather are perfectly suited for what is the world's foremost gem show!