A small, flask-shaped glass bottle with a slightly curved neck and a rounded base, designed to fit comfortably in the hand. The glass is thick and slightly translucent, filled with a luminous blue liquid that glows faintly, indicating its magical properties. The bottle is sealed with a cork stopper wrapped in a thin strip of leather, and the glass surface is smooth with occasional minor imperfections, suggesting handcrafted origin. The label, if present, is simple, with runic or alchemical symbols denoting its purpose.