October 3-4 2026 – Grass Valley, CA
Nevada County Gem and Mineral Society
Earth’s Treasurers Show
Nevada County Fairgrounds, 11228 McCourtney Rd., Grass Valley, CA 95945
Hours: Saturday, 10 AM – 5 PM, Sunday 10 AM – 4 PM
26+ Exhibit cases, 28+ Vendors Showcasing Fossils, Minerals, Gems, Jewelry and so much more. Expanded Kids Corner, Gold Panning, Silent Auction, Raffles galore, Talks, Demonstrations, and of course Food Dealers.
See website for admission fees

Show Info – Nevada County Gem and Mineral Society