Close up of a cut and polished laguna lace agate from Mexico Image #3382 4912 X 5538 pixels
Macrophotograph of the banding pattern in a Brazilian agate Image #4014 4800 X 2974 pixels
Macro photograph of linear patterns in a Whitcomb Creek geode from Oregon; a geode is a stone nodule with an inner cavity filled with crystals or mineral matter; converted to black and white Image #3287BW 4739 X 3083 pixels
