Incredible image, Mike. Where does one buy "agate slabs"? This is natural light with no flash? That's so cool! I would have thought you would need some extra bright light to get this kind of detail - simply amazing. The colors and patterns are drop dead gorgeous.
Hey Jules, just go on google and do a search for agate slabs and there are companies that sell them. They are small so you will have to add some extension tubes to get in really close.