Very large unmounted natural Gogotte formation from the Oligocene period (circa 30 million years ago). Just over 6KG in weight. 29cm long 18cm wide Yellowish in colour, I’m not sure whether this colouration is from exposure or if it runs through the material. Old large chip to the top and obvious rough base from where it was detached. Possible wide scraped area near the base. Please check photos carefully.
eBay