Mineral, Gem & Jewelry Show & Sale

Mineral & Gem Society of Castro Valley. Annual show & sale. Local Irvington District Fossils. Large Fluorescent Mineral display. GIA Gem Identification. No.CA Geological Society Rock ID. 40+ Dealers. 40+ Exhibits. Live Demonstrations. Geode Splitting. Kid's Spinning Wheel. Opal Pendant Raffle. Live Auction. Door Prizes. Free Parking. Fri. 10:00 am-6:00 pm, Sat. 10:00 am-6:00 pm, Sun. 10:00 am-5:00 pm; Admission $6 /3 day pass, Children under 13 Free, w/adult mgscv.org