7.3" Free-Standing, Polished, Crazy Lace Agate Section - Australia
This is a cut and polished, yellow and red "crazy lace" agate section, collected from Marillana Station north of Newman, in the Pilbara region of Western Australia. The specimen has been polished to a mirror like finish on one side, sits nicely on a flat surface and weighs just over 5 lbs!
Agate is a variety of microcrystalline quartz that displays translucence and in some cases banding. Agate primarily forms when silica-rich fluids fill pockets within rock and/or fossils, resulting in deposition of the silica along the walls of the rock. This process can result in banding patterns as the composition and impurities of the fluids change over time. These banding patterns can either form as flat layers or rounded layers, depending on the surfaces available for deposition.