Resonance Ear

The Resonance Ear is a tool crafted by the skilled artisans of Diobri, specifically designed to attune to the magical frequencies resonating within metals. It resembles a delicate, silver ear, crafted with intricate detail and fitted with a small, crystal lens. To use the Resonance Ear, the artisan carefully places it against their own ear. Through practice and focus, they learn to listen to the subtle hum of the metal, identifying the specific frequencies that indicate its quality, its durability, and the presence of any imperfections.
  The Resonance Ear is not a simple tool to master. It requires a keen ear, a patient hand, and an understanding of the complex interplay between magic and metal. Apprentices spend years studying under master smiths, learning to distinguish the subtle variations in the metal's resonance, much like a musician trains their ear to discern the nuances of different musical notes.