Coral that once lived on the ocean floor, gradually replaced by mineral over tens of millions of years. The organism is gone, but its outline remains locked inside the stone.

Most commonly found in the strata of Florida and Indonesia. Land that was once seabed, pushed upward by tectonic shift, unearthed beneath dry earth. A record of the ocean, sealed within the continent.

The skeletal structure has been entirely replaced by silica, yet the cross-section still bears the porous texture of a creature that once breathed. Fossil, yet as hard as agate. The boundary between living and inorganic—dissolved only by time.