2026 Calendar
California Rock, Gem and Mineral Shows
** Please check with all the shows prior to attending as the schedule can change and shows can be cancelled.
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October 2026
Oct 3-4, 2026 - Anderson, CAShasta District Fairgrounds, 1890 Briggs St., Anderson, CA 96007
Shasta Gem and Mineral Society
Hours: Saturday 9-5; Sunday 9-4
70th Annual Gem Show. Free to all; 70th Annual Gem Show. Jewelry, Crystals, Minerals, Fossils, Gemstones, Silent Auction, Exhibits, Raffle, Kids Booth.
Contact: [email protected], (530) 722-7133
Website: shastagemandmineral.org
Flyer
Oct 3-4, 2026 - Grass Valley, CANevada County Fairgrounds, 11228 McCourtney Road, Grass Valley, CA 95949
NCGMS
Hours: 10 am - 4 pm
"Earth's Treasures" Gem & Mineral Show
Contact: (530) 885-4338
Flyer
Oct 10-11, 2026 - Redwood City, CA
Community Activities Building, 1400 Roosevelt Ave., Redwood City, CA 94061
Peninsula Gem and Geology Society & Sequoia Gem and Mineral Society
Hours: 10am - 5pm
Contact: [email protected] / 650-575-3144
Website: pggs.org / sequoiagemandmineralsociety.org
Oct 17 - 18, 2026 - Santa Rosa, CAMemorial Hall, 1351 Maple Avenue, Santa Rosa, California 95404
Santa Rosa Mineral & Gem Society
Hours: Saturday 10 am to 6 pm; Sunday 10 am to 5 pm
Santa Rosa Mineral & Gem Society 49th Annual Mineral & Gem Show
Contact: [email protected] / 408-691-7823
NOVEMBER 2026
Nov. 14-15, 2026 - Concord, CACentre Concord, 5298 Clayton Road, Concord, CA 94521
Contra Costa Mineral and Gem Society
Hours: Sat 10am-5pm, Sun 10am-4pm
Contra Costa 76th Annual Mineral & Gem Show
Over 30 vendors, rough rocks, minerals, fossils, gem stones, jewelry, beads, rocking tools, accessories. Kid activities, grab bags, silent auction and a raffle. hourly door prizes and a hungry rock monster, spin the wheel, treasure box dig.
Contact: [email protected]
Website: ccmgsclub.com
Shasta Gem and Mineral Society
Hours: Saturday 9-5; Sunday 9-4
70th Annual Gem Show. Free to all; 70th Annual Gem Show. Jewelry, Crystals, Minerals, Fossils, Gemstones, Silent Auction, Exhibits, Raffle, Kids Booth.
Contact: [email protected], (530) 722-7133
Website: shastagemandmineral.org
Flyer
Oct 3-4, 2026 - Grass Valley, CANevada County Fairgrounds, 11228 McCourtney Road, Grass Valley, CA 95949
NCGMS
Hours: 10 am - 4 pm
"Earth's Treasures" Gem & Mineral Show
Contact: (530) 885-4338
Flyer
Oct 10-11, 2026 - Redwood City, CA
Community Activities Building, 1400 Roosevelt Ave., Redwood City, CA 94061
Peninsula Gem and Geology Society & Sequoia Gem and Mineral Society
Hours: 10am - 5pm
Contact: [email protected] / 650-575-3144
Website: pggs.org / sequoiagemandmineralsociety.org
Oct 17 - 18, 2026 - Santa Rosa, CAMemorial Hall, 1351 Maple Avenue, Santa Rosa, California 95404
Santa Rosa Mineral & Gem Society
Hours: Saturday 10 am to 6 pm; Sunday 10 am to 5 pm
Santa Rosa Mineral & Gem Society 49th Annual Mineral & Gem Show
Contact: [email protected] / 408-691-7823
NOVEMBER 2026
Nov. 14-15, 2026 - Concord, CACentre Concord, 5298 Clayton Road, Concord, CA 94521
Contra Costa Mineral and Gem Society
Hours: Sat 10am-5pm, Sun 10am-4pm
Contra Costa 76th Annual Mineral & Gem Show
Over 30 vendors, rough rocks, minerals, fossils, gem stones, jewelry, beads, rocking tools, accessories. Kid activities, grab bags, silent auction and a raffle. hourly door prizes and a hungry rock monster, spin the wheel, treasure box dig.
Contact: [email protected]
Website: ccmgsclub.com