Macro photograph of the linear pattern in an agate from Botswana Image #3506 4705 X 3013 pixels
Macro photograph of the structural detail in a sliced Graveyard Point plume agate from eastern Oregon Image #2798 6002 X 4775 pixels
Macro photograph of a slab of polished Mookaite jasper from the Mooka Creek area of Western Australia. Formed approx. 125 million yrs ago, in part, from the fossilization of microscopic protozoa called radiolaria. Image #3138 3080 X 4722 pixels
