This is a nephrite jade artifact from the Neolithic period in China, approximately 5,000 to 7,000 years ago. It is in the shape of a fish and is carefully carved on both sides, making it a valuable item. In Japan, this would be from the early to middle Jomon period, making it a very old artifact. Also, the overall weathering of the carvings suggests that it was not carved on a weathered stone originally, but rather that the carved stone was buried underground for many years and weathered over time. The price will be reduced periodically, so please consider it.