This was given to me by someone important from China. I'm selling it because I don't use it. There are stains on the cloth inside the wooden box from storage. The accompanying goban cloth has stains on it. Please understand that this is unused, but has these issues. Reference: Go stones made of agate, classified as a gemstone, have been considered high-class items since ancient times, and these go stones use natural agate for both black and white stones. Also, natural agate is known as a power stone. An agate gem authentication certificate is also included. It comes in a wooden box. From a layman's perspective, the thickness seems to be slightly uneven, and there may be scratches or chips. #Jade #Agate