A cross-section of brown agate reveals concentric bands of warm tan, cream, and charcoal that radiate outward from a sparkling crystal-lined center cavity against a dark ground. Gold foil accents trace the geometric layers, creating luminous linear patterns that emphasize the stone's natural formations and mineral deposits. Printed on smooth white card stock and made to order, artwork on the front, blank inside, envelopes included in every set. A handwritten note that arrives as an independent artist's work.