A rare and poetic piece of 19th-century craftsmanship, this antique locket (circa 1850-1870) takes the form of a finely constructed copper orb, hand-enameled in white and pink to represent the Earth in soft, abstracted topography. Both symbolic and sculptural, the orb twists open into two hemispheres, revealing a hidden compartment--suggestive of secrets kept, journeys imagined, or keepsakes cherished. Whether worn as a personal talisman or collected as an object of historical significance…