5298 Clayton Rd., Concord, California 94521, United States
The Contra Costa Mineral & Gem Society is proud to bring to you our annual
show and sale. New vendors, demonstrators, and interesting speakers, games, and activities for the
family. Raffle, new auction materials, and door prizes on the hour. Every ‘youth’ will get a FREE mineral
specimen. Active military & first responders’ FREE admission with an ID, All scouts in uniform Free, all
youths under 16 free with an adult, and free parking.