The Main Tent is a massive 83,000 square feet and the upscale SHOWCASE tent is 21,000 square feet. The SHOWCASE offers an elegant experience with wall-to-wall carpet, modular art walls, heating, air conditioning, and stage lighting -- all to showcase higher-end minerals, fossils, gems, and jewelry. This centrally located show at the northeast corner of I-10 and 22nd Street has the perfect balance of minerals, fossils, meteorites, dinosaurs, gems, gemstones, jewelry, beads, rough, and art. More than 50,000 visitors come during this 18-day event, making it the most-attended gem show in Tucson. But you can relax in our large food court served by 15 food trucks and free Wi-Fi. On-site parking is $5 on weekdays and $10 on weekend days, admission is always free, and everyone is welcome. No registration required.