If you can't find it on the website, there are two situations. One is an old certificate, which can't be found online. You can call the evaluation agency. The other is false certificate, but there are many such false certificates. I suggest you go to the local authoritative jewelry appraisal agency for re-inspection to safeguard your rights and interests.
How to read jade appraisal certificate
Committee of Military Affairs
CMA—— the symbol of measurement certification of testing institutions. Only institutions with this mark are legal testing institutions. According to the relevant provisions of "People's Republic of China (PRC) Product Quality Law", the institutions engaged in social testing and inspection of products in China must be qualified by the national or provincial metrological certification management department in conjunction with the recognized institutions, and can only engage in testing and inspection activities after being established or authorized according to law.
The contents of metrological certification assessment mainly include the qualification (level) of personnel, the accuracy and precision of inspection equipment and instruments, whether there are necessary workplaces and conditions, whether there are sound work, management rules and regulations, whether there are correct working basis and inspection methods, and so on.
kilocalorie
CAL-- the symbol of testing and inspection institutions recognized by AQSIQ. Institutions with this mark are qualified to make arbitration inspection conclusions. Having CMA mainly means that the testing personnel, testing instruments, testing basis and methods are qualified, and the premise of having CAL mark is that the measurement certification is qualified, that is, having CMA qualification, and then the quality management conditions of the organization also meet the requirements. Therefore, it can be considered that CAL is better than CMA only, and the working quality and reliability are further improved.
CNAL
Cnal—— The symbol of national laboratory has this symbol, which indicates that the inspection institution has passed the examination of China National Laboratory Accreditation Committee, and its inspection ability has reached the level of national laboratory (CMA and CAL only refer to the approval of provincial quality and technology management institutions). According to the relevant agreements of China's accession to the WTO, the "CNAL" symbol can be recognized internationally, for example, by the United States, Japan, France, Germany, Britain and other countries. Any of the above three marks is valid, especially the first mark CMA, which is the basic requirement of national laws for testing and inspection institutions. At present, due to the increasingly mature market competition and consumer psychology, and in order to cope with the increasingly sophisticated means of counterfeiting in the jewelry industry, testing and inspection institutions must constantly improve their technical level, testing ability and management means, so many testing and inspection institutions have the above three signs at the same time, and have the ability and level required by the three signs. It can be understood that with the identification certificate of the above three marks, there are "three risks".
At the same time, there are three jewelry and jade inspection institutions with CMA, CAL and CNAL. At present, there are National Jewelry and Jade Quality Supervision and Inspection Center, China Dadu Wuhan Jewelry and Jade Inspection Center, Shanghai Central Laboratory of Ministry of Geology and Mineral Resources, Yunnan Jewelry and Jade Jewelry Quality Supervision and Inspection Institute and other units.
Appraisal results of jadeite appraisal certificate The jadeite certificate issued by the national authority is one of the appraisal results. If it is natural jade, the result will be "jade", and some certificates will be marked with the words "A" and "Natural". If it is grade B jadeite, the identification result of the certificate will be marked with grade C jadeite, grade D jadeite and grade D jadeite, but the word "jade" will not appear in the identification result. What is this? Although some things come from a piece of raw material and look similar in appearance, jade ornaments are not exactly the same. The certificate of one thing does not prove the quality of the whole batch of things. In order to save costs, some merchants only use certificates as samples, and the goods in the photos are also very similar to the real things. It cannot be concluded that the goods they sell are natural and do not meet the national regulations. There should also be some basic physical, chemical and optical characteristics of jade, which is marked as 1 on the certificate. Refractive index (unique to jadeite itself and different from other gems).
2. Density (also a characteristic that distinguishes jadeite from other gems)
3. Magnification detection (this is the unique structure of jadeite)
4. Absorption spectrum (unique to jadeite)
5. Color filter inspection (some dyed jadeites will turn red under the color filter)
6. luminosity (jadeite is a collection of micro-minerals)
7. Fluorescence (some B goods will have a fluorescent reaction after injecting glue)
8. Appearance characteristics (some B goods will show waxy luster)
Finally, there must be the signature of the inspector, and there must be a steel seal or anti-counterfeiting mark on the certificate!
1. How to inquire about the jade appraisal certificate?
The purpose of inquiring about the jade appraisal certificate is to verify the authenticity of the certificate and prevent the rights and interests from being damaged due to false certificates. The certificate inquiry methods provided by most regular jade appraisal institutions mainly include the following:
1, website query
At present, most formal and legal jade appraisal institutions have established their own websites to provide consumers with their own appraisal certificates. The address of the inquiry website will be marked in the eye-catching position of the certificate. Consumers can find the relevant data of the certificate on the website as long as they log on to the inquiry website and enter the number, weight, verification code and other parameters of the jade appraisal certificate according to the tips of the website. As shown in the figure below:
In the process of website query, matters needing attention include:
A. Input method: For example, if the certificate number of some inspection stations contains English letters, the English letters on the appraisal certificate are capitalized, so you should input them in capitalization when inquiring.
B, picture problem: Some inspection stations can only provide certificate data query, no picture query, so consumers should carefully check whether the certificate data is consistent, including the weight of the object. On the website that provides picture inquiry, the picture displayed must be exactly the same as the picture on the certificate. Once the pictures are found to be inconsistent, it is necessary to doubt whether the pictures have been replaced by illegal vendors and further verify with the appraisal agency.
2. Telephone enquiry
The appraisal certificates issued by all jade appraisal institutions can be inquired directly by dialing the fixed telephone number on the certificate. And generally speaking, there is a special person to answer the phone and answer any questions about the certificate. Therefore, telephone inquiry is the most widely used and least restricted certificate inquiry method. Moreover, if consumers have some professional questions, they can also get good answers.
3, SMS query
Some jade appraisal institutions also provide SMS inquiry methods. The specific method is to edit the certificate number into a short message according to the prompt on the certificate and send it to the designated number. The query results are also sent back to the consumer's mobile phone via SMS. Some checkpoints of this service are free, and some checkpoints are charged.
4. QR code scanning query
Due to the increasing scale of smart phones in society, there are more and more users of WeChat and Weibo. The information capacity of QR code is large enough to contain information of an identity certificate, and it has strong anti-counterfeiting ability, which is almost impossible to forge. Therefore, by scanning the QR code on the authentication certificate on the mobile phone, you can see all the information of the authentication certificate on the mobile phone, and compare it with the certificate in your hand to verify the authenticity. This very convenient and free inquiry method can only be provided by the jade appraisal certificate of Yunnan Jewelry and Jade Quality Supervision and Inspection Institute.
Second, the jade appraisal certificate query matters needing attention
1, pay attention to distinguish whether the query result is true or not.
When you get a jade appraisal certificate, you should first check the authenticity of some background contents on the appraisal certificate. These background contents are neglected blind spots in the eyes of unscrupulous merchants who forge certificates because of their strong professionalism, but it is often these blind spots that expose fake jade appraisal certificates. Here are endless tips:
Illustration: A consumer encountered a false certificate in May 20 12.
This false certificate has the following defects:
A. It is mentioned in the introduction that it has passed the measurement certification and quality approval, then only two signs of "CMA" measurement certification and "CAL" quality approval will appear in the certification mark of the certificate. However, the certification marks appearing on the actual certificate are "CMA" (measurement certification) and "CNAS" (laboratory accreditation by China National Accreditation Committee for Conformity Assessment). That shows that there are serious errors in the certification mark of the certificate and the background introduction of the testing station. It is absolutely impossible for a formal jade appraisal institution to make such a serious and incredible mistake.
The query of laboratory number under B.CNAS logo shows: Guangdong Jewelry, Jade and Precious Metals Testing Center. Every standardized jadeite appraisal institution will issue an accreditation certificate after it has passed the laboratory accreditation of China National Accreditation Committee for Conformity Assessment. On this certificate, there will be the full name of the accreditation body and the number of the accreditation certificate. This information can be found on the official website of China National Accreditation Committee for Conformity Assessment. Therefore, according to the query results, the number of this CNAS logo does not match the appraisal institution written on this appraisal certificate, which is commonly called deck.
C. The ringtone voice prompt of the supervision telephone belongs to Ruili Jewelry Testing Station of Dehong Bureau of Quality and Technical Supervision. At present, the CRBT voice prompt of domestic fixed telephone involves the company or company name, and it needs to apply for business license or company certificate. Therefore, when dialing the fixed telephone number written on the certificate, a CRBT voice prompt from another company appears, which only shows that the telephone number on this certificate is that of another company.
2. Certificates are easy to cause data misunderstanding.
A. Quality: The "quality" on the jade appraisal certificate actually refers to "weight", not the quality of jade. I have learned in physics class in middle school that the exact expression of the actual weight of each object is the word "quality". Only in daily life, everyone is used to "weight";
B, when the jadeite has been strung with rope or inlaid with metal during identification, isn't the "density" written as 3.33g/cm? 3; Yes;
C. Some inspection items that have not been tested or evaluated will be indicated by "* * * * *". But in the mouth of some businesses, this means five-star quality, which is wrong.
3. How to see whether the certificate is consistent with the real thing?
A. Look at the picture-compare the physical object with the picture on the appraisal certificate. There may be differences in color and hue, but the basic external characteristics of jadeite can still be compared. The basic external features of jadeite jade include: the shape of bracelet (round, flat or wide-edged), the carving pattern of pendant, the distribution position and shape of color, etc.
B, according to the quality-the quality on the jade appraisal certificate will generally be at least accurate to two decimal places. The quality of jadeite should be similar to the data in the certificate (the error of 0.0 1-0.05g is normal).
Through the above two steps, you can basically determine whether the certificate is consistent with the real thing. If any inconsistency is found, you need to call the jade appraisal institution to verify the specific reasons.