1, look at logo. Generally, there will be an English abbreviation logo at the top of the real jade certificate. For example, CMA, CAL, CNAS, in which CMA is necessary and is the basic requirement of national laws for testing and inspection institutions. Otherwise, the certificate is invalid.
2. The front of the jade bracelet identification 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.
3. In China, there is not only one institution for jadeite appraisal certificate. At present, there are three kinds of most common jadeite appraisal certificates in the market, namely, national inspection, provincial inspection, universities and third-party inspection institutions.
4. If the jadeite certificate issued by the national authority is not natural jadeite, the result is only "jadeite", and the words "A" and "natural" will not be marked. Only natural A goods will issue the certificate of "Jade" result.
5. The identification certificate of jade bracelet is first of all cards of different sizes. The physical shape of the jade bracelet itself should be the same as that on the appraisal certificate. There must be a steel seal of an authoritative appraisal institution.
What do you think of Yuzheng?
1. 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.
2. Appearance First, look at whether the jade photo on the jade identification certificate is consistent with the real thing, and observe 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.
3. Jade identification certificate identification: English logo, the certificate must bear the "CMA" logo, otherwise it will not be credible; Certificate number, the number corresponding to the certificate can be found on the website; Appraisal institutions to see if they have the right to issue certificates.
What is a formal jade appraisal certificate?
1, subordinate number. The real certificate has a clear number. If there is no number on the certificate, it is forged. Judging from English name symbols. Real certificates usually have the signs of "CAL, CMA, CNAL", and "CMA" is a must. If not, the certificate is false.
2. Another formal jade appraisal certificate, in addition to the English logo above, will also have the product picture, certificate number and agency seal.
3. Look at this sign. Generally, there will be an English abbreviation logo at the top of the real jade certificate. For example, CMA, CAL, CNAS, in which CMA is necessary and is the basic requirement of national laws for testing and inspection institutions. Otherwise, the certificate is invalid.
4, C goods jade, will be marked "Jade (Dyed)". The word "emerald" will not appear in the project of the appraisal certificate. If it is a substitute, please indicate the name of the substitute, such as "artificial glass", "dyed quartzite", "Xiuyu" and "Ma Laiyu".
What do you think of Yuzheng? What kind of jade certificate is true?
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.
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.
No number: Jade certificates are generally numbered, which is a sign to check whether the number of certificate frames is true or false. False certificates generally have no serial number, in order to prevent us from finding that the certificate is false after checking the serial number. A jade certificate without a number is equivalent to a blank sheet of paper.
What does this mean? Are all certificates of jadeite like this?
1, look at logo. Generally, there will be an English abbreviation logo at the top of the real jade certificate. For example, CMA, CAL, CNAS, in which CMA is necessary and is the basic requirement of national laws for testing and inspection institutions. Otherwise, the certificate is invalid.
2, jade appraisal certificate It can be used as one of the important documents to identify the authenticity of jade, but it should be noted that the jade appraisal certificate is also fake and needs to be seen clearly. First of all, official website can inquire whether the institution that issued the jade jewelry inspection certificate has the qualification to issue the jade appraisal certificate.
3. In China, there is not only one institution for jadeite appraisal certificate. At present, there are three kinds of most common jadeite appraisal certificates in the market, namely, national inspection, provincial inspection, universities and third-party inspection institutions.
4. In terms of quantity. The real certificate has a clear number. If there is no number on the certificate, it is forged. Judging from English name symbols. Real certificates usually have the signs of "CAL, CMA, CNAL", and "CMA" is a must. If not, the certificate is false.
5. If it is smooth and delicate, it is a genuine jade certificate; if it is rough, it is a fake jade certificate. 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.
How to identify jadeite and jade, and how to read the jade identification certificate?
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.
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.
First of all, the appearance depends on whether the jade photo on the jade identification certificate is consistent with the real thing, and it should be observed from the aspects of workmanship and color. (Jade bracelets should also be checked for cracks). Total mass This is the weight of jadeite, which must be consistent with the certificate.