nephriteChinese ArtjadeArtLate Neolithic period (ca. 5000 - ca. 1700 BCE)Charles Lang Freer collection
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Perforated disk of the type pi [bi] 璧; bored mostly from one side; mottled grayish-olive green, one side very much lighter in tone; sprinkled with whitish incipient disintegration; a shallow saw mark on one surface.