How Chinese jade carving removes stone
The abrasive is central to the process. The British Museum describes sands worked against jade with carriers that could include wood, bamboo, or cord. A tool need not itself be harder than the stone when it carries particles that do the grinding. This helps explain why a soft polishing wheel can belong to a hard-stone workshop.
The Met preserves a twentieth-century polishing wheel made from dried gourd peel, accession 1981.296.27. Its description explains that fine abrasive mixed with water was spread on such wheels before they were mounted on a rotating shaft. Foot treadles supplied motion while the worker held and adjusted the jade with both hands. This is evidence for one documented tool arrangement, not a reconstruction of every earlier workshop.
Jade is a material category, not a single green stone
Nephrite and jadeite both appear in Chinese collections, and neither name should be assigned by colour alone. The Met identifies its eighteenth-century peach-shaped brush washer as jade, specifically nephrite; its eighteenth-century water receptacle, accession 02.18.355, is catalogued as jadeite. Those identifications belong to those objects. They do not make every similar-looking vessel the same material.
The shape and colour distribution of a rough piece also affect design. Qiaose describes an approach that incorporates differing natural colours into the image. It is one option among many, rather than a rule that every carving must display contrasting colours or retain its outer surface.
Two museum objects, two different problems
The Met’s annular disk, or bi, accession 17.118.43, is attributed to Liangzhu culture and dated to the middle of the third millennium BCE. Its record identifies nephrite. The plain ring asks us to notice proportion, the central opening, and the continuous worked surfaces. The museum cautiously suggests ritual use or a role in displaying status; the exact purpose of this individual disk should not be presented as settled.
The eighteenth-century brush washer, accession 65.86.181a, b, takes the form of half a peach supported by branches and leaves, with a waterbird forming its handle. Its shallow cavity makes the stone into a vessel while the surrounding forms make it sculpture. The Met connects its design with fifteenth-century metalwork. A familiar desk function could therefore support imaginative borrowing between materials.
A living craft with changing equipment
Research published by GIA documents contemporary carving centres and both manually controlled powered tools and computer-controlled engraving. Equipment changes do not make all works follow one sequence or design logic. The maker still has to relate a proposed form to the available material, and tool transitions occurred gradually rather than neatly at the boundary of a dynasty.
Compare the companion guide to Chinese bamboo carving for a material worked directly with edged tools. The Four Treasures of the Study guide places vessels such as brush washers beside the brush, ink, paper, and inkstone. Museum photographs show finished objects; they do not document the working sequence of the particular historical maker.
Museum photographs and credits
Brush washer, China, 18th century; catalogued by The Met as jade (nephrite). A waterbird forms the handle of the peach-shaped vessel. The Met, 65.86.181a, b; public domain/CC0, cropped and resized.
Annular disk (bi), China, Liangzhu culture, mid-3rd millennium BCE; catalogued as jade (nephrite). The Met, 17.118.43; public domain/CC0, resized. This finished object provides historical and material context, not a photograph of drilling.
Detail crop from the same photograph of The Met’s 65.86.181a, b brush washer shown above. The waterbird handle and surrounding branches show its carved form. Public domain/CC0; cropped and resized.
