Tucson Gem and Mineral Show started 1955 as a small show organized by the Tucson Gem & Mineral Society at an elementary school. It was so popular, it became an annual event and moved Pima County Fair and Rodeo Grounds until  1972, when it moved to the Tucson Convention Center. 

Today, the Tucson Gem & Mineral show is the largest of its kind in the country and has grown to include more than 40 satellite shows.