Pale greyish celadon jade river pebble from the Uyghur Autonomous Region in China, famous for its fine quality nephrite. This pebble was found in the White Jade River in Hetian (formerly known as Khotan). It has a crackled exterior and one side was chipped off but became smoothed by tumbling in the river. Length 4.1 cm. Width 3.3 cm. Depth 1.9 cm. Weight 37.0 grams.