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Subject:Re: Nephrite horse head staff or sword with gold glitter
Posted By: richard Sun, Feb 07, 2016
Hi Super and others interested. What caught my attention is this Asianart.com article, dating back to 2007 about "Fools Gold" in Jade.
If it wasn't for having read the Asianart article below, I might well agree this was/is maybe a more moderen piece.
However according to the article below, could this be Hongshan Jade?
http://big5.ce.cn/kjwh/scpm/scxx/200704/13/t20070413_11026929_3.shtml
In this article, page 4, the author talks about the current condition of Hongshan jade markets with predominate fakes and thus affect the confidence of many Hongshan collectors. Therefore, he want to give some tips in authenticating Hongshan jades. In the second paragraph of this page, this is what he says,
"Metal Marks & Patches (I will use Metal Spots and Streaks)
The topic regarding metal streaks and spots have not been discussing in any jade books I have read so far. Nobody has talked about it. Of course, such topics as "Ding Gum Chum" (Nail Gold Diffusion} or "Sha Gum Chum" (Sprinkle Gold Diffusion) have been discussed in many books and they all believe they are due to the chemical reactions between buried jades with the acidic iron elements and acidic zinc elements in the soil. I do not think this is correct. This type of metallic streaks and spots, has to be caused by the inner metallic ions found inside the jade piece, after long burial in the ground and suffereing extreme heat, pressure and other oustide factors, the metallic ions will migrate toward the jade surface and concentrate there. Therefore this phenomenon is not due to outside contact with any types of metals. This phenomenon seems to happen more frequently with deep green and dark green actinolite (probably ferro-actinolie; this is the nephrite that has more iron in their structure) which contain more metallic iron. This seldom happens with white nephrite or Hetian jades (white nephrite is basically tremolite and has more Mg and very small amount of iron). This type of metallic spots and streaks is not limited to Hongshan jades but will appear on archaic dark green jades that are one thousands years or older. Therefore such special charcterisitic will be an extremely useful tool in authenticating archaic jades."
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