When my friend, a massage therapist, learned I was pregnant last winter, he gifted me a stunning large, clear piece of quartz he had bought during a recent crystal-foraging trip to Brazil. I welcomed the gift and the positive protective energy my friend said he could feel with his hands. I even placed it on the dinner table the night of my induction. It couldn’t hurt, could it? Although the market for diamonds has seen a decline during the pandemic, “near-gemstones” (crystals and minerals) have maintained their appeal among consumers, making it a $1 billion business. Even classy art giants...