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Contra Costa Gem and Mineral Society Show - We Dig Rocks!
Check the show's website for dates
Want to ask a gemologist about grandma's stone ring, learn to pan gold, touch a Megalodon tooth or answer the age old question, 'What is Jet' we have it all. Tons of activities, exhibits, demonstrators and a whole room of rocks that glow. Active service, first responders get in FREE with ID. Largest show in Contra Costa County!
5298 Clayton Rd., Concord, California 94521, United States
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