Macro photograph of the color and detail in a Sheep Creek plume agate; Oregon Image #3519 7360 X 4912 pixels
Macro photograph of the structural detail in a sliced Graveyard Point plume agate from eastern Oregon Image #3432 4673 X 3115 pixels
Macro photograph of the color and detail in a backlit Sheep Creek plume agate; Oregon Image #3525 6037 X 4009 pixels
