I'm sort of mildly obsessed with the patterns and colors of agate, malachite, and jasper (not a surprise when you see the header for the blog). Only nature could whip up visual textures, colors, and compositions this amazing. It's such incredible natural "art". I'd love a collection of these babies. They were photographed by cobalt123(I'm not sure what her actual name is) and Darwin Dillon. Check out their Flickr pages through the links (both are quite prolific). Enjoy some rock candy!
Images via cobalt 123
Images via Darwin Dillon