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 Image #3287 4739 X 3083 pixels
Macrophotograph of a small portion of a Cactus quartz (a.k.a. Spirit quartz) crystal cluster with purple amethyst. The orange coloration is due to iron oxidation and small iron inclusions can be seen in the matrix of many of the crystals. From the Magaliesberg Mountains of South Africa. Image #4114 4800 X 3200 pixels
Macro photograph of linear patterns in a polished slab of Snakeskin jasper from Western Australia Image #3297 4800 X 3200 pixels
