Before every rockhounding trip, we do our homework. We research locations, study maps, save coordinates, check access, and make lists of what we're supposed to find when we get there. By the time we leave home, our maps are covered with little pins, and we have enough research to convince ourselves that we know exactly what we're doing. Then we get there and discover that apparently the rocks had changed the assignment. Our August trip through Montana, Wyoming, and South Dako

Wondering if a crystal is real? Learn the differences between natural, synthetic, treated, and imitation crystals, plus practical clues that can help you recognize dyes, treatments, common fakes, and other warning signs before you buy.

Did you know some crystals are older than the dinosaurs, some rocks glow under ultraviolet light, and the device you're reading this on contains minerals? From ancient Earth to everyday technology, these 10 surprising crystal facts reveal just how fascinating the world of rocks, minerals, and gemstones really is. Whether you're a seasoned collector or simply curious, there's something here that just might surprise you.