Why weren’t the geologists hungry? Because they’d lost their apatite.

Haha! Now you have the perfect ice-breaker for the least jaded event of the season: The Contra Costa Mineral & Gem Society’s Mineral and Gem Show, which this year is celebrating the group’s amazing 75 years in existence. Truly, geology rocks.

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Taking place at Centre Concord, the show is meant not just for collectors of glittery, hard things, but for anybody curious about the way the planet’s put together. “Step inside and explore a dazzling world of minerals, gems, fossils, meteorites, crystals, beads, jewelry and slabs from expert vendors and collectors,” the organizers write. “Discover Earth’s hidden beauty up close through live lapidary demonstrations, educational displays and interactive exhibits t

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