Rough Chalcedony Agate Nodule

A rough chalcedony agate nodule from Brazil, left completely unworked with its natural rind still intact, so what you are holding is what came out of the ground. Chalcedony is a calming, grounding stone that helps clear the mind. It is a natural specimen, so the shape, color and pattern belong to this one alone. A good starting piece for a rock collection.