Lot 28: JADE RING DECORATED WITH THE 'TWISTED ROPE' PATTERN

Galerie Zacke Vienna

December 3, 2016, 2:00 PM CET
Vienna, Austria
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Description: Jade. China, Eastern Zhou, 4th - 3rd century BC

This ornamental ring is decorated with a pattern known as 'twisted cord' motif, consisting in regular grooves carved on the body of the ornament and as if they radiate from the empty centre. The name of this peculiar pattern is due to the fact that the motif looks as if a rope or a bunch of 'silk threads', as it is called in Chinese, has been wrapped around a ring.
These ornaments were used as components of pendants, suspended together with other jades fastened through ropes or bundles of silk. Two lacquer-painted wooden figurines wearing pendants that include also jade rings with the twisted rope pattern have been excavated from a 4th century BC tomb of the Chu culture at Xinyang, Henan province.
This particular motif and how it was made with such precision on jades of the 6th to 2nd century BC, was the subject of a scientific research conducted by Peter J. Lu in his article, "Early precision compound machine from ancient China" (Science 304, 2004): in his paper, Liu argues that the "twisted rope pattern" follows a precise mathematical form described by the spiral of Archimedes. Such an accurate drafting of the pattern would have required a precision compound machine at such an early date: the author proposes a basic mechanical design which is based only upon technologies known to have existed at that time. (link to the article: http://www.peterlu.org/content/early-precision-compound-machines).
Similar rings are in the National Museum of China, Beijing (diam. 7.5 cm); in the Asian Art Museum, San Francisco, The Avery Brundage collection (6.7 cm in diameter, object number B60J824); in the Freer/Sackler galleries, Washington, D.C. (accession number: F1939.10, diameter 7 cm); and in the Harvard Art Museums/Arthur M. Sackler Museum, Bequest of Grenville L. Winthrop (object number 1943.50.612, diameter 7.5 cm). Images of comparative jades can be seen at the following links:
http://www.chnmuseum.cn/Default.aspx?TabId=212&AntiqueLanguageID=3969&AspxAutoDetectCookieSupport=1
http://searchcollection.asianart.org/view/objects/asitem/search@/18?t:state:flow=54d31c57-d489-4012-914b-db6d7693a6de
http://www.asia.si.edu/collections/edan/object.php?q=fsg_F1939.10
http://www.harvardartmuseums.org/collections/object/204665?position=0

绞丝纹玉环 -战国, 公元前4世纪-前3世纪;
直径 8.4
DIAMETER 8.4 CM
From a German collection
Notes: All jades in this catalogue will soon be published in the forthcoming jade book by FILIPPO SALVIATI: "THE MYSTERIOUS STONE - Archaic and Antique Chinese Jades from Neolithic to Han from Private Collections".

Professor Salviati teaches Chinese Art at the University "La Sapienza" in Rome, Faculty of Oriental Studies, and is one of the world's most recognized jade experts, specialized in archaic jades until the Song Dynasty. Hi-resolution pictures of all jades are to be found in our web-site, and can be enlarged so that handwork, age-related traces of weathering, as well as colors are very well recognizable.

本書中的所有玉器都也出版在:"神秘的石头-私人收藏的新石器时代到汉代的玉器"作者:Filippo Salviati
Salviati教授是羅馬大學中國美術專家,世界上最出名的雕玉藝術專家之一。他的專業是商代一直到宋代的古玉。我會網上的古玉都可以方大,看的到最微小的細節,正如手工,年代顏色等。
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Shipping Terms: For domesticshipping, Galerie Zacke (hereinafter "t
he company") charges 15 to approx. 50 euros per item, depending on size an
d weight. These fees cover the
costs of packing and shipping respectively. For bulk
y or fragile items, postage fees
will be quotedupon request. For personal deliveries
abroad, postage fees will also be
quoteduponrequest. Following handover of the packag
ed item to the post office or to
another carrier (whose commissioning the customer s
hall agree to by submitting a
purchase order), the goods shall be transported at
the risk of the customer. Should
the customer so wish, the auctioned goods may be in
sured to the value of the
purchase price (highest bid and surcharge). Such in
surance shall cost 3% of the
purchase price. For purchase prices in excess of 350 euros per auction,
transportation insurance shall be arranged by the C
ompany automatically. Payments
due to the Company under the insurance contract sha
ll be credited to the customer
and the Company shall also be entitled to assign cl
aims under the insurance contract
to the customer, providing the terms of the insuran
ce contract do not prevent this. In
any case, the Company shall only be required to mak
e payment to the customer
specifically once payment has effectively been rece
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