Jeffco Mineral Show
Jeffco Mineral Show
The annual Jeffco Mineral Show returns November 20, 21, and 22, 2026, at the Jefferson County Fairgrounds!
FREE ADMISSION — Everyone is Welcome!
Discover something fascinating at the Jeffco Mineral Show, featuring 20+ vendors with an incredible variety of minerals, fossils, gemstones, crystals, and more.
Whether you’re a longtime collector, a rock enthusiast, or just looking for a fun family activity, you’ll find plenty to explore. Browse unique specimens, discover beautiful gemstones, and experience the fun of geode cracking—crack open a geode and see what treasures are hiding inside!
Come shop, explore, learn, and discover something new at this annual Colorado mineral show.
Show Hours:
Friday, November 20: 10 AM–5 PM
Saturday, November 21: 10 AM–5 PM
Sunday, November 22: 10 AM–4 PM
Jefferson County Fairgrounds
20+ Vendors • Minerals • Fossils • Gemstones • Geode Cracking • FREE ADMISSION
