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Peninsula Gem & Geology Society Schedule Click Here for full California Show Schedule Upcoming Schedule Wednesday, November 11, 2026, 7-9pm Program: Midwest Sphalerite 'Trace Occurrences' Presented by Len Piszkiewicz on Zoom and in person at Los Altos Community Center, 97 Hillview Ave., Los Altos, California Thursday, December 10, 2026 Annual Holiday gathering in Redwood City for Sequoia and PGGS/BAM members and guests Details in the December newsletter