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Nephrite is a variety of the calcium, magnesium, and iron-rich minerals or (aggregates of which also make up one form of ). The chemical formula for nephrite is 2(, )5822(O)2.

(1988). 9780873110198, Gemological Institute of America.
It is one of two different mineral species called . The other mineral species known as jade is , which is a variety of . While nephrite jade possesses mainly grays and greens (and occasionally yellows, browns, black or whites), jadeite jade, which is rarer, can also contain blacks, reds, pinks and violets. Nephrite jade is an ornamental stone used in , , or cut gemstones. Nephrite is also the official state mineral of .

Nephrite can be found in a translucent white to very light yellow form which is known in China as mutton fat jade, in an opaque white to very light brown or gray which is known as chicken bone jade, as well as in a variety of green colors. Western is the principal source of modern nephrite.Kirk Makepeace, George J. Simandl, Jade (Nephrite) in British Columbia, Canada ; in G.J. Simandl, W.J. McMillan and N.D. Robinson, (editors), 37th Annual Forum on Industrial Minerals Proceedings, Industrial Minerals with emphasis on Western North America, Paper 2004-2-57, pages 287–288 (2004). Accessed October 30, 2016 Nephrite jade was used mostly in pre-1800 as well as in , the Pacific Coast and Atlantic Coasts of North America, Neolithic Europe, and southeast Asia.


Name
The name nephrite is derived from the Latin lapis nephriticus, which in turn is derived from the () or λίθος (), which means "kidney stone" and is the Latin and Greek version of the Spanish piedra de ijada (the origin of jade and jadeite). Accordingly, nephrite jade was once believed to be a cure for kidney stones.


Other names
Besides the terms already mentioned, nephrite has the following synonyms and varieties: axe-stone, B.C. jade, Beilstein, kidney stone, lapis nephriticus, nephrite, nephrite, , New Zealand greenstone, New Zealand jade, spinach jade (dark grayish green), and talcum nephriticus. Tomb jade or grave jade are names given to ancient burial nephrite pieces with a brown or chalky white texture as a surface treatment.


History

Neolithic and Chalcolithic Europe
A lot of nephrite tools and amulets are known since the Early Neolithic (7th millennium BC) to the Late Chalcolithic (5th millennium BC) on the Balkans (mainly Bulgaria; also in Greece, Serbia, Croatia) from two or more unknown sources — Balkan "nephrite culture." Such tools are found in the Later Neolithic of Poland (from the most probable local source Jordanów), Sardinia (Italy) (unknown source) and Switzerland. Single or just a few finds of nephrite artifacts are also reported from some other European countries.


Prehistoric and historic China
During times, the key known sources of nephrite jade in China for utilitarian and ceremonial jade items were the now depleted deposits in the Ningshao area in the Yangtze River Delta ( 3400–2250 BC) and in an area of the Liaoning province in ( 4700–2200 BC). Jade was used to create many utilitarian and ceremonial objects, ranging from indoor decorative items to jade burial suits. Jade was considered the "imperial gem." From about the earliest Chinese dynasties until present, the jade deposits in most use were from the region of in the Western Chinese province of (jade deposits from other areas of China, such as , , were also in great demand). There, white and greenish nephrite jade is found in small quarries and as pebbles and boulders in the rivers flowing from the Kuen-Lun mountain range northward into the Takla-Makan desert area. River jade collection was concentrated in the , and the White Jade () and Black Jade () Rivers in Khotan. From the Kingdom of Khotan, on the southern leg of the , yearly tribute payments consisting of the most precious white jade were made to the Chinese imperial court and there transformed into objets d'art by skilled artisans, as jade was considered more valuable than or .


Prehistoric Taiwan and Southeast Asia
Carved nephrite jade was the main commodity trade during the historical Maritime Jade Road, an extensive trading network connecting multiple areas in Southeast and East Asia. The nephrite jade was mined in east by animist Taiwanese indigenous peoples and processed mostly in the by animist indigenous Filipinos. Some were also processed in , while the peoples of , , , , , and also participated in the massive animist-led nephrite jade trading network, where other commodities were also traded. Participants in the network at the time had a majority animist population. The maritime road is one of the most extensive sea-based trade networks of a single geological material in the prehistoric world. It was in existence for at least 3,000 years, where its peak production was from 2000 BCE to 500 CE, older than the Silk Road in mainland Eurasia. It began to wane during its final centuries from 500 CE until 1000 CE. The entire period of the network was a golden age for the diverse animist societies of the region.Tsang, Cheng-hwa (2000), "Recent advances in the Iron Age archaeology of Taiwan", Bulletin of the Indo-Pacific Prehistory Association, 20: 153–158, doi:10.7152/bippa.v20i0.11751Turton, M. (2021). Notes from central Taiwan: Our brother to the south. Taiwan’s relations with the Philippines date back millenia, so it’s a mystery that it’s not the jewel in the crown of the New Southbound Policy. Taiwan Times.Everington, K. (2017). Birthplace of Austronesians is Taiwan, capital was Taitung: Scholar. Taiwan News.Bellwood, P., H. Hung, H., Lizuka, Y. (2011). Taiwan Jade in the Philippines: 3,000 Years of Trade and Long-distance Interaction. Semantic Scholar.


Māori
Nephrite jade in is known as in the Māori language and is highly valued, playing an important role in Māori culture. It is considered a , or treasure, and therefore protected under the Treaty of Waitangi. The exploitation of it is restricted to the italic=no (tribe) and it is closely monitored. The of New Zealand is Te Wai Pounamu in Māori — 'The land Greenstone Water' — because that is where it occurs.

Weapons and ornaments are made of it; in particular the mere (short club) and the (neck pendant). These are believed to have their own mana (prestige), are handed down as valuable heirlooms, and often given as gifts to seal important agreements. It has also been used for a range of tools such as and was used to make nails used in construction, as Māori culture had no metalworking before European contact.

Commonly called "greenstone," jade in Māori designs is widely popular with tourists. Stone is often imported from Canada, China and Siberia, and italic=no runs a pounamu certification scheme to verify the authenticity of New Zealand stone.

  • Bale, Martin T. and Ko, Min-jung. Craft Production and Social Change in Mumun Pottery Period Korea. Asian Perspectives 45(2):159–187, 2006.
  • Kostov, R. I. 2005. Gemmological significance of the prehistoric Balkan 'nephrite culture'. - Ann. Univ. Mining and Geology, 48, part 1, 91–94.
  • Kostov, R. I. 2013. Nephrite-yielding prehistoric cultures and nephrite occurrences in Europe. - Hemus, 2, 11–30.


Further reading
  • Adamo, I., R. Bocchio. 2013. Nephrite jade from Val Malenco, Italy: review and update. – Gems & Gemology, 49, 2, 2-10.
  • Beck, R. 1991. Jade in the South Pacific. New Zealand, Australia and New Caledonia. – In: Jade (Ed. Keverne, L.). Van Nostrand Reinhold, New York, 221–258.
  • The Bishop Collection. Investigation and Studies in Jade (Ed. Kunz, G. F.). 1906. The Devinne Press, New York, Vol. 1-2, 570 p.
  • Childs-Johnson, E., G. Fang. 2009. The Chinese Jade Age: Early Chinese Jades in American Museums. Science Press, Beijing, 403 p. (in Chinese and English)
  • Darwent, J. 1998. The Prehistoric Use of Nephrite on the British Columbia Plateau. No. 25. Simon Fraser University, Department of Archaeology Press, Burnaby, 123 p.
  • East Asian Jade: Symbol of Excellence. Vol. 1-3. (Ed. Tang, Ch.). 1998. Centre for Chinese Archaeology & Art, The Chinese University of Hong Kong, Hong Kong.
  • Feng, X., Y. Zhang, T. Lu, H. Zhang. 2017. Characterization of Mg and Fe contents in nephrite using Raman spectroscopy. – Gems & Gemology, 2, 204-212.
  • Fischer, H. 1880. Nephrit und Jadeit nach ihren mineralogischen Eigenschafen sowie nach ihrer urgeschichtlichen und ethnographischen Bedeutung. 2 Aufl., E. Scheizerbart’sche Verlaghandlung (E. Koch), Stuttgart, 417 S.
  • Gil, G., J. D. Barnes, C. Boschi, P. Gunia, G. Szakmány, Z. Bendő, P. Raczyński, B. Péterdi. 2015. Origin of serpentinite-related nephrite from Jordanów and adjacent areas (SW Poland) and its comparison with selected nephrite occurrences. – Geological Quarterly, 59, 3, 457-472.
  • Hansford, S. H. 1968. Chinese Carved Jades. Faber and Faber, London, 131+96+8 p.
  • Harlow, G. E., S. S. Sorensen, V. B. Sisson. 2007. Jade. – In: Geology of Gem Deposits (Ed. Groat, L. A.). Mineralogical Association of Canada, Short Course, 37, 207-254.
  • Histoire de la ville de Khotan: tirée des annales de la chine et traduite du chinois ; Suivie de Recherches sur la substance minérale appelée par les Chinois PIERRE DE IU, et sur le Jaspe des anciens . Abel Rémusat. Paris. L’imprimerie de doublet. 1820. Downloadable from: [2]
  • Hung, H.-C., Y. Iizuka, P. Bellwood, K. D. Nguyen, B. Bellina, P. Silapanth, E. Dizon, R. Santiago, I. Datan, J. Manton. 2007. Ancient jades map 3000 years of prehistoric exchange in Southeast Asia. – Proc. Natl. Acad. Sci. USA, 104, 50, 19745-19750.
  • Jade (Ed. Keverne, L.). 1991. Van Nostrand Reinhold, New York, Lorenz Books, 376 p.; 1991. Anness Publishing, London.
  • 1906. Geologie des Nephrites im südlichen Ligurien. – Zeitschr. Deutsch. Geol. Ges., 58, 3, 307-378, pl. XVIII.
  • Kolesnik, Yu. N. 1966. Nephrites of Sibiria. Nauka, Novosibirsk, 150 p. (in Russian).
  • Kostov, R. I., H. Protohristov, Ch. Stoyanov, L. Csedreki, A. Simon, Z. Szikszai, I. Uzonyi, B. Gaydarska, J. Chapman. 2012. Micro-PIXE geochemical fingerprinting of nephrite Neolithic artifacts from Southwest Bulgaria. – Geoarchaeology, 27, 5, 457-469.
  • Laufer, Berthold, 1912, Jade: A Study in Chinese Archeology & Religion, Reprint: Dover Publications, New York. 1974.
  • Luo, Z., M. Yang, A. H. Shen. 2015. Origin determination of dolomite-related white nephrite through iterative-binary linear discriminant analysis. – Gems & Gemology, 51, 3, 300-311. Albert Saifer,
  • Meyer, A. B. 1888. The nephrite question. – American Anthropologist, 1, 3, 231-242.
  • Middleton, A. 2006. Jade – geology and mineralogy. – In: Gems (Ed. O’Donoghue, M.). 2006. Sixth Ed., Butterworth-Heinemann, Elsevier, Amsterdam – Boston – Heidelberg – London, 332-355.
  • Morin, J. 2016. The Salish nephrite/jade industry: ground stone celt production in British Columbia, Canada. – Lithic Technology, 41, 1, 39-59.
  • Nott, S. C. 1936. Chinese Jade throughout the Ages: A Review of its Characteristics, Decoration, Folklore and Symbolism. B.T. Batsford, London, 193 p.
  • Orchiston, D. W. 1972a. Maori greenstone pendants in the Australian Museum, Sydney. – Records of the Australian Museum, 28, 161-213.
  • Platonov, A. N., V. N. Belichenko, L. V. Nikol’skaya, E. V. Pol’shin. 1975. On the colour of nephrites. – Konstitutsiya i Svoistv Mineralov Constitution, 9, 52-58 (in Russian).
  • Pope-Hennessy, U. 1923. Early Chinese Jade. Benn, London, 149 p., I-LXIV Pl.
  • Rawson, J. 1975. Chinese Jade Throughout the Ages. London.
  • Skinner, H. D. 1940. The Maori Hei-Tiki. Coulls Somerville Wilkie Ltd., Dunedin.
  • So, J., J. D. Douglas. 1998. Understanding and identifying jades from the Hongshan Culture. – In: East Asian Jade: Symbol of Excellence (Ed. Tang, C.). Centre for Chinese Archaeology & Art, Chinese University of Hong Kong, Hong Kong, Vol. 1, 148-163.
  • Suturin, N. A., P. S. Zamaletdinov. 1984. Nephrites. Nauka, Novosibirsk, 150 p. (in Russian)
  • Tsydenova, N. V., M. V. Morozov, M. V. Rampilova, Ye. A. Vasilev, O. P. Matveeva, P. B. Konovalov. 2015. Chemical and spectroscopic study of nephrite artifacts from Transbaikalia, Russia: a provenance study. – Quaternary International, 355, 114-125.
  • Vetlesen, M. 1939. Chinese jade Carvings of the 16th to the 19th century in the collection of Mrs. Georg Vetlesen. New York, 3 vol., 895 p.
  • Wang, R. 2011. Progress review of the scientific study of Chinese ancient jade. – Archaeometry, 53, 4, 674-692.
  • Ward, F. 1987. Jade – stone of heaven. – National Geographic, 172, 3, September, 282-315.
  • Wen, G., Z. Jing. 1996. Mineralogical studies of Chinese archaic jade. – Acta Geologica Taiwanica, 32, 55-83.
  • Wilkins, C. J., W. Craighead Tennant, B. E. Willianson, C. A. McCammon. 2003. Spectroscopic and related evidence on the coloring and constitution of New Zealand jade. – American Mineralogist, 88, 8-9, 1336-1344.
  • Yang, Y. 1996. The Chinese jade culture. – In: Mysteries of Ancient China (Ed. Rawson, J.). G. Braziller, London and New York, 225-296.
  • Yin, Z., C. Jiang, M. Santosh, Y. Chen, Yi Bao, Q. Chen. 2014. Nephrite jade from Guangxi Province, China. – Gems & Gemology, 50, 3, 228-235.


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