1. As long as jade is written on the certificate, there are no words such as optimization, bleaching, pickling and dyeing. Even if the word A is not marked, it can be judged as genuine. Good luck.

2. Usually, the jade bracelet identification certificate will indicate the density and refractive index. If not, it may be a forged jade bracelet identification certificate. The appraisal certificate will indicate some details, such as the weight, shape, color, refractive index, density, absorption spectrum and magnification test of the jade bracelet.

3. There is no density and refractive index on the jade bracelet identification certificate, which may be non-A goods; Add pictures or links to know.

Is this proof true? There is no refractive index of jadeite on the certificate!

1. Usually, the jade bracelet identification certificate will indicate the density and refractive index. If not, it may be a forged jade bracelet identification certificate. The appraisal certificate will indicate some details, such as the weight, shape, color, refractive index, density, absorption spectrum and magnification test of the jade bracelet.

There is no problem with this certificate. It's true. If you don't feel at ease, you can take a look at official website of this appraisal company.

3. The jewelry appraisal certificate will have these two items, which are the basic characteristics of jewelry and will not change. For example, the density of jadeite is 33, and the refractive index is 66 (point measurement). With these items, you can determine whether it is jade. But it doesn't mean that only these two pieces can be sure to be jadeite, and there are many other important parameters.

Excuse me, the certificate of jade bracelet has no data such as refractive index spectrum analysis and density refractive index. , but it only means commodity a. ...

1. Usually, the jade bracelet identification certificate will indicate the density and refractive index. If not, it may be a forged jade bracelet identification certificate. The appraisal certificate will indicate some details, such as the weight, shape, color, refractive index, density, absorption spectrum and magnification test of the jade bracelet.

2. Either way, the results are actually exact, that is to say, as long as the words "natural jade A" are marked, there is no problem.

3. There is no density and refractive index on the jade bracelet identification certificate, which may be non-A goods; Add pictures or links to know.

4. For bracelets without cracks, knocking with other non-bracelet jade will make a tinkling sound, while the sound of B goods is not so crisp. You can compare it with the confirmed A bracelet.

5, normal! The refractive index is one of the characteristics to determine that the detected object is natural jadeite, which is generally 66. However, there are many testing items to determine natural A jadeite, and major testing institutions make comprehensive judgments according to their respective testing habits. No refractive index does not mean abnormal.

Is there no density on the jade bracelet identification certificate a fake?

1, dear, the jade certificate is based on whether it has been chemically treated or not. If it has not been chemically treated, it is considered as A goods, and it is not necessary to measure the density to judge whether it has been chemically treated. The general laboratory can see whether it has been chemically treated by high-power microscope or spectral results.

2. There is no logical relationship between whether the density is marked and whether it is fraudulent. The density of jadeite is generally 33. If it is inlaid with gold or jade, it is not convenient to measure the density of the finished product, so the identification certificate of some objects is not indicated.

3. There is no density and refractive index on the jade bracelet identification certificate, which may be non-A goods; Add pictures or links to know.

4. It is normal that there is no density on the jade certificate! Doesn't mean the certificate is fake. There are two reasons: 1, because the inlay is unexpected: jade is inlaid with precious metals, so the density cannot be measured accurately, so the density is not measured.

Jade certificate does not show refractive index and density. Could it be a fake?

1. Usually, the jade bracelet identification certificate will indicate the density and refractive index. If not, it may be a forged jade bracelet identification certificate. The appraisal certificate will indicate some details, such as the weight, shape, color, refractive index, density, absorption spectrum and magnification test of the jade bracelet.

2. Dear, the jadeite certificate is based on whether it has been chemically treated or not. If it has not been chemically treated, it is considered as A goods, and it is not necessary to measure the density to judge whether it has been chemically treated. The general laboratory can see whether it has been chemically treated by high-power microscope or spectral results.

3. There is no logical relationship between whether the density is marked and whether it is fraudulent. The density of jadeite is generally 33. If it is inlaid with gold or jade, it is not convenient to measure the density of the finished product, so the identification certificate of some objects is not indicated.

4. The certificate format of each appraisal institution is different. It doesn't matter if you don't. A piece of jade has a certificate. Jadeite A refers to natural jadeite, which is only processed, carved, polished and polished by physical methods, without any chemical or irradiation methods to improve its internal structure.

5. Jade bracelet. There is no data such as refractive index, spectral analysis, density and refractive index on the certificate. , just means A goods, largely natural jade A goods! This kind of certificate, called batch certificate, is generally a large jewelry company, and a large number of goods are uniformly appraised by jewelry and jade appraisal institutions, and certificates are issued.

6 and so on. Certificates should be in one-to-one correspondence, that is, a thing is a certificate, and the certificate should have pictures and weights of the goods. Although some things come from a piece of raw material and look similar in appearance, jade ornaments are not exactly the same. One thing with a certificate can't prove the quality of the whole batch of things.

Is it false that there is no refractive index on the jade appraisal certificate?

Usually the jade bracelet identification certificate will indicate the density and refractive index. If not, it may be a forged jade bracelet identification certificate. The appraisal certificate will indicate some details, such as the weight, shape, color, refractive index, density, absorption spectrum and magnification test of the jade bracelet.

Not necessarily. You can identify jadeites a, b and c by yourself. Tips: Observe the lighting to see if there is a faint yellow tone. If there is, it is basically determined as A, and if there is no light color, it can be basically determined as B or B+C (except for the green species with white background, the glue of B goods will turn yellow after a long time).

Normal! The refractive index is one of the characteristics to determine that the detected object is natural jadeite, which is generally 66. However, there are many testing items to determine natural A jadeite, and major testing institutions make comprehensive judgments according to their respective testing habits. No refractive index does not mean abnormal.

Jade bracelet, there is no data such as refractive index, spectral analysis, density and refractive index on the certificate. , but only marked a goods, which are largely natural jade a goods! This kind of certificate, called batch certificate, is generally a large jewelry company, and a large number of goods are uniformly appraised by jewelry and jade appraisal institutions, and certificates are issued.

Wait a minute. Certificates should be in one-to-one correspondence, that is, a thing is a certificate, and the certificate should have pictures and weights of the goods. Although some things come from a piece of raw material and look similar in appearance, jade ornaments are not exactly the same. One thing with a certificate can't prove the quality of the whole batch of things.

In addition, all provinces in China have corresponding provincial jewelry appraisal centers, which can also issue jade inspection certificates. Finally, some third-party organizations can also issue appraisal certificates, but these certificates are naturally not as effective as NGTC.