Hematite Bracelet（6mm）

In 480 BC, when the 300 Spartans defended Thermopylae, they concealed amulets made of hematite beneath their armor—the ancient Greeks believed that this blood-red black stone could absorb the fear of battle and forge calm decisiveness. "Wearing hematite allows the survival instincts of the Iron Age to become emotional bulletproof vests for the information age."