Dazzling Gem, Mineral & Jewelry Show Returns to JeffCo Fairgrounds

Entry is free to the three-day event hosted by the Denver Gem & Mineral Guild

Published on Feb. 18, 2026

The Denver Gem & Mineral Guild is hosting its annual Gem & Mineral Show at the Jefferson County Fairgrounds Exhibit Hall from Friday, February 27 to Sunday, March 1, 2026. The free event will feature displays of minerals, fossils, meteorites, glowing rocks, and handcrafted jewelry, as well as educational activities like gem cutting demonstrations, gold panning lessons, and a fluorescent "Bat Cave" exhibit.

Why it matters

The Gem & Mineral Show is a long-running event that draws rock hounds, jewelry makers, and families from across the region to explore the wonders of the geological world. It provides a unique opportunity for the public to learn about and start their own mineral collections through hands-on activities and interactions with expert collectors.

The details

The three-day show will feature more than 20 educational displays from organizations like the Sherman-Dugan Geological Museum and the Denver Museum of Nature & Science. Attendees can watch skilled lapidary artists cut and polish gems, learn how to pan for gold, and vote for their favorite display case to enter to win prizes. Visitors can also start their own mineral collection by purchasing $1 grab bags filled with 8 samples.

  • The Gem & Mineral Show will take place from Friday, February 27 to Sunday, March 1, 2026.
  • Show hours are 10 a.m. to 6 p.m. on Friday and Saturday, and 10 a.m. to 5 p.m. on Sunday.

The players

Denver Gem & Mineral Guild

The organization hosting the annual Gem & Mineral Show at the Jefferson County Fairgrounds.

Sherman-Dugan Geological Museum

One of the educational organizations participating in the show with a display.

Denver Museum of Nature & Science

Another educational organization participating in the show with a display.

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What’s next

Attendees can plan to arrive early to the show on Friday, February 27 or Saturday, February 28 to have the best chance of finding rare and unique mineral specimens and jewelry pieces.

The takeaway

The Gem & Mineral Show is a free, family-friendly event that offers a unique opportunity for the public to explore the wonders of the geological world through hands-on activities, educational displays, and interactions with expert collectors and enthusiasts.