Macro photograph of a polished slab containing chrysocolla (blue) and malachite (green) from the Bagdad copper mine in Arizona Image #3169 4772 X 3187 pixels
Macro photograph of the patterns in a piece of fossilized oak from Oregon; Miocene in age Image #3416 4745 X 3200 pixels
Macrophotograph of the banding patterns and structural detail in a cut and polished Laguna agate from Mexico Image #4096 5553 X 4073 pixels
