Two polished agate slices reveal concentric rings of coral, orange, amber, and cream, with deep burgundy edges and glowing yellow centers that suggest geothermal heat. The composition captures the raw geological beauty of these mineral cross-sections, arranged vertically with organic precision against a clean white ground. 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.