Macro photograph of the structural detail in a sliced Graveyard Point agate from eastern Oregon Image #3435 3106 X 4800 pixels
Macrophotograph of the patterns in a cut and polished Agua Nueva agate from Mexico Image #3935 4800 X 3079 pixels
Structural detail in a cut and polished agate from Brazil Image #3824 5977 X 4041 pixels
