The jade appraisal certificate is issued by the appraisal institution. When you are in doubt about buying jade, you can go to the appraisal institution in your province and city for monitoring, and the cost is about tens to hundreds of yuan.
Look at the signs: there will be several signs with English abbreviations at the top of the real appraisal certificate, such as CMA, CAL and CNAS. CMA is necessary and the basic requirement of national laws for testing and inspection institutions. Otherwise, the certificate is invalid.
The absorption spectrum of jadeite is determined by infrared spectrum. A jadeite has its own characteristic absorption spectrum. If obvious resin absorption band is found in the measured absorption spectrum, it can be concluded that it is B jadeite. This is an effective method to identify B grade jadeite.
The picture should be consistent with the real thing: there must be a picture of jade on the certificate of jade jewelry, and it is a multi-angle photo, which can be compared with the real thing to see if it is consistent.
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 jade appraisal certificate. Jade identification certificate is the identity card of jade, which is especially important for the authenticity of jade. First of all, the jade certificate must have any one of CMA, CAL and CNAL. Secondly, look at the jade appraisal conclusion, and the appraisal result will tell you whether the jade is genuine or not.
How to treat the real jade certificate?
Jade certificates are generally divided into two sides. The front is the standard information and picture of jade, and a code will be randomly generated and pasted on the jade, the normal code bar will be pasted on the inner ring of the bracelet, and the pendant will be pasted on the back; On the reverse side are the signs of national certification and the information of quality inspection institutions, including the website, telephone number and address of quality inspection institutions.
Signs, first look at the English abbreviation signs on the jade certificate, such as whether there are CMA and other signs, if there are, it means that it is a genuine jade certificate.
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.
How to identify jade jewelry certificate
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.
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. Check whether the jade certificate has a number. If it has a number, it means that it is a real jade certificate. Otherwise, if it has no serial number, it means it is a fake jade certificate.
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.
The picture should be consistent with the real thing: there must be a picture of jade on the certificate of jade jewelry, and it is a multi-angle photo, which can be compared with the real thing to see if it is consistent.
How to open the jade 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.
The jade appraisal certificate is issued by the appraisal institution. When you are in doubt about buying jade, you can go to the appraisal institution in your province and city for monitoring, and the cost is about tens to hundreds of yuan.
For inspection, you need to bring your valid ID card to the inspection window of the testing center to go through the inspection procedures for jewelry that needs to be identified. Here, the business personnel will go through the relevant testing procedures for the samples that meet the testing scope.
The picture should be consistent with the real thing: there must be a picture of jade on the certificate of jade jewelry, and it is a multi-angle photo, which can be compared with the real thing to see if it is consistent.
Jade certificates are generally divided into two sides. The front is the standard information and picture of jade, and a code will be randomly generated and pasted on the jade, the normal code bar will be pasted on the inner ring of the bracelet, and the pendant will be pasted on the back; On the reverse side are the signs of national certification and the information of quality inspection institutions, including the website, telephone number and address of quality inspection institutions.
Because the standard of jade authenticity appraisal is very accurate, as a qualified authoritative appraisal institution, the time to identify a piece of jade is actually very short. But as a rule, you will be asked to wait for two hours to get the appraisal results.