Tiger's Eye Voyager Sphere

Cut and polished into a perfect forty-five-millimeter sphere, this stone shows the chatoyance tiger's eye is named for: a single band of gold light that seems to slide across the surface as the sphere turns in the hand or catches a change in the room's light. The base color runs from deep amber to a warm root-brown, striped where the original blue crocidolite fibers were replaced, over geologic time, by silica. Sailors, soldiers, and traders once carried tiger's eye as a talisman against ill will and bad luck on the road, a tradition often traced to Rome, where the stone was said to be set into rings worn into battle. Custom credits it with steadying the nerve before a hard conversation or a long journey, lending a kind of borrowed confidence to whoever keeps it close. This example was cut from rough mined in the Northern Cape of South Africa, home to the richest tiger's eye deposits found anywhere, where the stone forms in ancient asbestos seams later silicified into the banded, fibrous mineral lapidaries prize today. The sphere form asks more of the cutter than a simple tumble; every angle must be ground down evenly to keep the chatoyant band centered and unbroken. Set it on a stand where the light can reach it, and turn it now and then to watch the band travel. A handsome, weighty thing to hold before walking into a room you'd rather not enter alone.