A friend through the message board said unto me, oneself in their local market to buy the emerald you hang wearing wearing color changes. He said the more general, and this problem and the need to according to different situations to analyze the causes. So you’re a similar situation friend can according to below the different situation to analyze his jadeite jewelry.

One, to the question, first from its quality up analysis.

Hisui, is the produce of hard jade, is the world precious treasure jade resources. The storage and water is very limited. And according to its color and kind of jade the difference of water, the price will be the difference is very big. Common is often is a colorless, have a colorless, have a plenty of good color but no water, these factors result in its value will not sell well, if it’s a good color kind of good, so prices could is a colorless, no kind of or nonferrous is colorless have seed N times, became extremely XiHanWu value of collection. In the face of such price difference, some bad businessman and thought of the false.

(a), dyeing jade.

By high temperature and high pressure will dye into the original colorless jade, make it all or partial dyed green or purple, but its colour and lustre will turn pale and change over time is dark dumb. Really fine dyeing product, amateur is not way to identify with the naked eye, even business jadeite jade DuoNian people also can’t guarantee must be able to HuoYanJinJing, identify true and false. Must be an expert to the scientific method inspection, plus professional knowledge to identify. For dyeing coarsely product, can macroscopic observation the following features:

1, the appearance of color, dark, depressing and slant blue, because by the blue is the meat and dyeing.

2, color exist only surface layer, looks’ floating “.

3, color is the distribution of the Lord by dyeing veins cent gives fine veins dyeing lines, as plant root gives spread all over the whole of stone and lateral root.

4, dyeing hisui will lose luster and is in a “dry” or “water” (not transparent).

5, color slants blue not natural, the so-called evil color.

6, color special “order” like wearing the uniform, as are the same.

7, although more than a single color jade dyeing is, but not more than the color is not dye, especially the bracelet is more likely to dyed green, purple and red three color bracelets called the Gospel, lu, the long bracelet.

Use standard gemstone identification equipment check:

1, dyed green jade color in Charles are orange or pink; Use a microscope can be observed in blue element and the root system lines; With handheld spectrometers observation, can be measured 6300 A-6700 A have A broad and vague absorption band.

2, the dyed purple, in long wave under ultraviolet light intensity to the very strength orange fluorescence reaction and ultraviolet is a weak orange short-wave fluorescence reaction.

3, dye (pigment) gathered in the surface crack.

(2), the laser radiation to color.

Irradiation changing hisui, in the microscopic or under the observation lamp can be found on the surface of the emerald green around, a ring belt or plaque shape distribution, the c goods the jadeite Charles become purple color, add hydrochloric acid or use fire can make its fade. With this kind of method with hisui, at first sight green and moving, good diaphaneity, but cui inside deeply blue, jade piece of the surface has been bombarded with traces of the bombardment has not been in place and bombarded by comparison, the former surface surface color depth than the latter.

(3), coating jade. In the surface of the jade white inferior, parcel a thin green film, make originally didn’t color white jade, become green transparent. With the passage of time, the jadeite jewelry after a long and skin, clothes and friction, coating fall off, ecru revealed. The surface coating processing hisui, filter and the ultraviolet ray in there were no response. The general appraisal method is to use the microscope to magnify the check its features: (1) the peculiar rough surface loses jade face (pit pit concave); Because by the film wrapped and smooth (2) can see the film with a fine point on table, erased the film was born in a scattered with jade’s joints. Especially in the underside of the table in the clear blue. (3) will hisui pour turn it over, sigint, can see color focus on jade around. (4) can sometimes see the film was broken in the colors of the original show kind of jade. Also can use hot needle or big head acupuncture broken film, but this law must be cautious application. In addition can also be used spectrometers, in the red zone observed a thick absorption spectrum.

(4), artificial color treatment. Distinguish between natural red color jade and bake the red hisui is difficult, because their red is made from hard jade trace of iron ion be caused by, just natural red hisui good diaphaneity, red parts burnish is stronger, appears have “spirit” gas, and bake the color of the color red inflexible, massiness and even, this is because the process of natural color in nature is slow to form, and artificial bake color is a sharp change in a short time and into.

These false to the color jade jewelry, after DaiJiu color will change.
Two, the problem of jadeite jewelry needs from observation to the analysis of the environment.

Hisui, is very spiritual things, in different observation environment, the color will has certain change.

1, the light. “Next month beauty the light jade”, in general, jade in the light can appear more beautiful, the phenomenon is called “eat”. Some jade in the light does not produce change, is called “don’t eat.” So the name of jadeite jade bead photography are below natural light, and according to the shooting started, to ensure customer’s expectations after receiving goods.

2, background. Any color in different color background observation, it has certain visual difference. An expert in the jadeite appreciation, assessment, are seen in white effect shall prevail.

3, foil. We in the evaluation of the judge a jade, its environment also can affect the quality of the jade judge our assessment.
Three, the problem of the “spiritual” jade from it.

Everyone must be heard a so called “people keep jade, jade rearing”. Meaning is that in certain jade and mutually, the jade jewelry through long-term wear and play, the quality of the jade and people body and mind had improved.

(a), say first “people keep jade”. People keep jade mean, a lot of jadeite jewelry by man wearing long after the wear more deeply, more and more bright-coloured color, the more wear more bright. What reason is this? Name bead hisui think, there are a couple of reasons

1, hisui adsorptive the water.

Mineral collection will exist between monomers