A cross-section of an agate geode reveals concentric bands of turquoise, teal, and deep blue radiating from a luminous crystalline core. The layered rings create a hypnotic symmetry, with the outer edges transitioning to pale aquamarine and white, suggesting the slow geological time that formed this natural wonder. 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.