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Market

Jeffco Mineral Show

· 10 am – 5 pm · Jefferson County Fairgrounds

Checked October 28, 2026 against jeffcomineralshow.com. Times can change; the organizer’s page is the record. Report a correction · Know something opening or closing? Tell us

A three-day gem and mineral show at the Fairgrounds, where more than 30 mineral dealers from around the state set up booths of collector-quality minerals. The organizers are Dan Zellner and John Schmidt.

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