Macro photograph of the silvery blue bladed structure of the mineral kyanite, an aluminum silicate. From Brazil Image #2584 4748 X 3117 pixels
Macro photograph of the detail in a piece of Birds Eye rhyolite; a rock of volcanic origin Image #2369 4800 X 3200 pixels
Macro photograph of a slab of fluorite (calcium fluoride) from the Jiangxi Province in China Image #2510 4800 X 3200 pixels
