This is a jade artifact from the Neolithic period in China, dating back 5,000 to 7,000 years. It is likely a religious object, perhaps symbolizing the sun. It is heavy and solid, and I imagine it was extremely difficult to carve. 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 wasn't carved on an already weathered stone, 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.