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Subject:Re: Metallic luster?
Posted By: Bill Thu, Jul 23, 2009
May:
I can surely share your love in jade because I called myself jade craze and yet I believe Anita is even crazier than me in that she lives in jade and breathes in jade. I believe she will skip her next meal and spend her last penny on jade if she sees a jade piece she truly falls in love with. She and Mike had been going jade hunting all over Hong Kong and China.
The only sad part with many experienced jade collectors or jade experts, in my opinion, is that once they have come to the conclusion that they are good with jade they will become overconfident with their own expertise and believe they will be able to judge the quality of a jade piece based solely on its digital pictures. They will also have very low tolerance for other people's opinions on any jade carvings because they believe they are infallible. The "real expert" is the one who would be very humble and hesitated in attributing any jade carvings with pictures alone, no matter how high-definition they may be. The dealer whom I trust said it was hard enough for him to attribute a jade carving in person he would not even attempt to attribute any with pictures alone.
This is a person who has published many jade articles and appraised many expensive and large jade collections including those that are owned by museums.
Therefore, it is very possible if some of us in this forum will be able to examine your jade bangle bracelet in real life, we may change our opinions on it. Once a jade friend posted a Shang dynasty green nephrite dear on the other jade forum, most other members including myself did not believe it was archaic because its material looked bad. After he received the piece, he took and posted some better pictures and all of a sudden I could see how nice the material and quality of the piece was. Those members who were in doubt before(including myself) changed our opinion on it from negative to favorable.
To me sometimes it is almost easy to tell if a piece of jade is "old" or "new". You just feel the surface of the jade carving with you finger tips. The older and better the jade pieces, the longer they will spend time in polishing it. During the Qing emperor Qianlong era, before high-hardness grit polishing is discovered, it could take more than one year's time in polishing a jade bowl. If you can feel its surface "silky smooth", then it is almost definitely it will be an older piece. On the other hand, modern jade carving was polished with high-hardness grit (such as diamond or corundum grit) with high-speed electrical polishing tools. They will feel sticky. However, this may not always be true especially with jadeite carving that had been worn for a while.
Another very difficult thing to achieve is the "luster" of a jade carving and I do mean "luster" that look likes "gem luster". The degree and quality of luster found on a jade carving depend on two major things: the quality of its jade material and the polishing skills and time employed in polishing the piece. Many jade collectors still believe waxing, vaseline or polishing can improve the luster of a jade carving including modern jade carvings. The truth is no amount of waxing or polishing can improve the luster of any jade carvings no matter how much wax or vaseline you pile on the piece or how long you would bluff it. The reason some of the authentic Hongshan jade carvings have such superb luster is because animal pelt with animal grease was being used to polish them for many many years after the initial polishing with quartz grits (jade polishing sand).
On this nice late Qing dynasty archer's ring I posted in this forum:
http://www.asianart.com/phpforum/index.php?method=detailAll&Id=34073
Its luster is satin like and when I touch it with my finger tips, it feels so silky smooth. It is almost a joy to play with it. Interestingly, almost many of these older archer's rings are made in almost exact size, much smaller than the fake ones.
Once you can touch and see this ring, you have no doubt that it is a nice jade ring and how it is different than the modern jade rings.
I had recently purchased a supposedly rare Hongshan jade bird (see pictures). It appears almost white on its picture but its actual color is a little bit more celadon (very light green). Normally I would not touch any jade carvings in this color, because it would be either be made in white quartz, some soft white stone or some celadon serpentine. In this case, I like its carving lines, its polishing and the fact that the dealer (he is in China) seems to know about jade. He told me it was made of nephrite jade. Since I already bought another piece from him, therefore he would not charge me postage for this second piece.
Its size is 1.8"H x 1.7"W x 0.4" T and its weight is 30.2 gram.
I decided to take a gamble since it is not that expensive and because I wanted to examine its carving lines closely to see if I can detect the unique Hongshan carving techniques employed in making these lines.
When I received it, its S.G. is 2.91 and its hardness is about 6.5 It was made of very good nephrite jade that is hard to find today.
Unfortunately, just like its picture shown, there is no luster on its surface although the polishing is very nice. Comparing with my other Hongshan jade bird (which I believe is real), it feels "sticky" upon feeling it with my fingertip. It is very translucent but the celadon color is just not as vivid as that of my other bird. The other bird is a bright vivid celdon while this one is very dull green. I also cannot detect the unique Hongshan carving technique on its carving lines and the thing that tells me that it is a modern piece is the edges of its two holes on its rear are sharp, that means that they were either made with metal carving tools or somebody did not even take the time in polishing off the sharp edges. In short, this jade bird is probably modern in the sense that it is less than 100 years old, however I cannot really detect any modern tool marks on it and therefore it could be made prior to the 60s. For the price I paid or it and its nice quality nephrite jade, I was content to have it as a study piece.
Feel the surface of any future jade carving you may want to buy (if you can), if its surface feel sticky or you feel any rough or sharp edges anywhere, then it is almost likely that it is modern. Buy yourself a 10x loupe, or a 15x loupe that was made in Japan or Belgium or Sweden or Germany, examine its carving lines, many modern tool marks were left by high speed electrical carving tools and you will see these long straight lines inside the carving lines that are parallel to each other. E-mail Anita and she may send you pictures of these modern carvings lines she took on a jade puzzle ball.
When you look at the picture of a jade carving, always look for the luster, avoid those "glassy luster" made by high-speed polishing. Buy a cheap piece of jadeite carving from Gojade on eBay and you can tell how the "glassy luster" of jadeite achieved by high speed polishing should look like. Many beautiful jade carvings have very beautiful and natural luster that could only be achieved by manual and painstaking polishing.
Go to www.paragonbook.com and see if you can find some good jade books. I post a jade book reference on another link in this forum (about jade bowl)which is a good jade reference for the money.
Happy jade hunting!
Bill
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