Luminal Exchange
A network of light bloomed across the granite's surface, resolving into a dynamic pricing chart. Each pulse corresponded to an internal state – a tightening in the jaw, or fleeting thought—immediately translated into quantifiable value accompanied by the scent of aged ink. The stone registered not just memory traces but actively responded to them, assigning cost even before awareness took hold. This constant exchange created pressure within its depths; geological strata seemed to shift with each valuation, leaving one wondering if it recorded history or manufactured it.