The other day I went with my family to an old pyrite mine which is now a tourist spot. We were greeted by a stand with crystals with supposedly miraculous prop

The other day I went with my family to an old pyrite mine which is now a tourist spot. We were greeted by a stand with crystals with supposedly miraculous properties. What was the only miraculous thing to me was the type of poker face the seller had when explaining the details of his products' properties. I can't hope to ever reach this level of, ahem, professionalism.