Macro photograph of a slab of fluorite (calcium fluoride) from the Jiangxi Province in China Image #2510 4800 X 3200 pixels
Macrophotograph of the color and patterns in a backlit piece of carnelian from Washington State Image #3667 3173 X 4740 pixels
Macro photograph of carnelian which is a variety of chalcedony, which is a variety of quartz; from Washington State Image #2379 3133 X 4677 pixels
