Chinese 汉代或北魏四神石头砚 / It is extremely rare to find an ancient ink stone of this size. Another ink stone of a large size ink stone is displayed in the Chinese museum in Henan and no where else (see reference photo). There are still some parts left that shows black coloration from the ink, but most of it has been fossilized with time. This particular ink stone weights 10kg. / From the Northern Wei dynasty (北魏: 386-535) /// size: 10.35 x 2.63 inches