Macrophotograph looking into the depths of a cut and polished moss agate; from the Lucky Strike mine in Oregon Image #3615 6026 X 4034 pixels
Macro photograph of a Holly Blue agate from Sweet Home, Oregon Image #2368 3200 X 4800 pixels
Strong angular backlighting emphasizes the concentric structure patterns in a Montana agate Image #2697 2811 X 4726 pixels
