The front of the jade bracelet appraisal certificate: it is the issuing unit, and the testing institution can be the quality inspection station under the provincial quality supervision bureau or the quality inspection station under the municipal quality supervision bureau. Some colleges and universities offering jewelry majors are also eligible to issue appraisal certificates.

First of all, look carefully at whether the shop opening organization that issued the jade jewelry inspection certificate has the right to issue the jade appraisal certificate.

Jade bracelet certificate is so true and false. First of all, look at the sign: CMA-the sign that the testing institution has passed the measurement certification, and the institution with this sign is a legal testing institution. CAL- is the symbol of inspection organization approved by national quality inspection, and the organization with this symbol is qualified to make arbitration inspection conclusion.

Observe the English abbreviation marks on the jade certificate, such as whether there are CMA and other marks. If there is, it means it is a genuine jade certificate.

What is the method of jade identification certificate?

Submitting for inspection: The first step in making jadeite certificate is to submit for inspection, bring valid identity documents to the testing center, and go through the formalities of submitting for inspection at the "Personal Entrustment window" of the testing center.

Looking at the jade appraisal certificate, we should first look at whether any of the three marks of CMA, CAL and cncal are printed on the inspection certificate. All legally issued certificates must have the signature of the appraiser on the back, and they must have two or more signatures in order to have legal benefits.

Look at the appraisal results. If the jadeite certificate issued by the authoritative organization is not natural grade A jadeite, the result is only "jadeite", and the words "grade A quality" and "natural" will not be marked. You know, only natural A goods will issue the certificate of the result of "Jade (A goods)".

Weight identification method: Because the density of jade itself is relatively high, it will feel heavy to move jade up and down in your hand a few times. This method is suitable for identifying fake jadeite with light weight, such as plastic jadeite. Voice identification method: the sound of A brand jadeite must be crisp when it is struck, and the sound of B brand jadeite is low.

How to identify jadeite certificate

The certificate number or inspection number on the certificate can be used to check whether the purchased goods are consistent with those on the certificate. If there is a code on the jade, it can also be compared with the code on the certificate. Secondly, the refractive index on the certificate is 66, which is the most common structure of jadeite and the most important feature that distinguishes jadeite from other jadeites.

Submitting for inspection: The first step in making jadeite certificate is to submit for inspection, bring valid identity documents to the testing center, and go through the formalities of submitting for inspection at the "Personal Entrustment window" of the testing center.

Check and evaluate the qualifications of institutions; After you get the jade appraisal certificate, you must first check whether the appraisal institution marked on the certificate has the appraisal qualification. You can query whether the organization is true and effective through the network.

Look at this sign. On the real jade certificate, the most conspicuous signs are several English abbreviations, and the common signs are "CMA", "CAL" or "CNAL". CMA is a sign that the measurement certification of testing institutions is qualified, and the institutions with this sign are legal testing institutions.

How to identify jadeite with certificate How to identify jadeite with certificate

First of all, look at which unit issued the certificate of jade. Formal certificates are state-owned, and they must be stamped to be authoritative. Other jade certificates are not authoritative, and some are even fake.

How to see the authenticity of jade certificate? Logo: First, look at the English abbreviation logo on the jade certificate, such as whether there is a logo such as CMA. If there is, it means that it is a genuine jade certificate.

The certificate number or inspection number on the certificate can be used to check whether the purchased goods are consistent with those on the certificate. If there is a code on the jade, it can also be compared with the code on the certificate. The normal inspection conclusion on the general certificate is jade. If the jade has been optimized, there will be a corresponding description.

Look at the signs: on a genuine jade certificate, the most conspicuous signs are several English abbreviations, and the common signs are "CMA", "CAL" or "CNAL". CMA is a sign that the measurement certification of testing institutions is qualified, and the institutions with this sign are legal testing institutions.

Only natural A goods will issue the certificate of "Jade" result. If it is grade B jadeite, one of the appraisal results in the certificate will be marked as "jadeite (treatment)", "jadeite (glue injection)", "jadeite (grade B quality)" or "jadeite (optimization)". C Jade will be marked with "Jade (Dyed)".

How to identify the certificate of old jadeite how to identify the certificate of old jadeite

English logo: the general jade certificate will be marked with CMA, CAL, CNAL, etc. One or more of them represent the qualification of the certification body, in which "CMA" is necessary, without which it is not credible.

Check and evaluate the qualifications of institutions; After you get the jade appraisal certificate, you must first check whether the appraisal institution marked on the certificate has the appraisal qualification. You can query whether the organization is true and effective through the network.

Shape and color: the shape and color of jade carving are most intuitive in front of your eyes. Total mass: the weight of jadeite.

How to identify the jade certificate?

1, the appearance first depends on whether the jade photo on the jade identification certificate is consistent with the real thing, and it is observed from the workmanship and color (the jade bracelet should also be checked for cracks). Total mass This is the weight of jadeite, which must be consistent with the certificate.

2. Only natural A goods will issue the certificate of "Jade" result. If it is grade B jadeite, one of the appraisal results in the certificate will be marked as "jadeite (treatment)", "jadeite (glue injection)", "jadeite (grade B quality)" or "jadeite (optimization)". C Jade will be marked with "Jade (Dyed)".

3. Font: Finally, observe the font of the jade certificate. If the font is clear, it means it is a genuine jade certificate. Otherwise, if the font is blurred, it means it is a fake jade certificate.