However, unscrupulous profiteers can even make fake jewelry, so false certificates are natural. Fortunately, it is easier to identify fake certificates than fake jewelry, and it doesn't take much effort. You only need to know the information and signs of the certificate. Today, I will teach you to identify the jewelry appraisal certificate.
1, learn about various signs: CMA, CAL, CNAS, ILAC.
There are often marks such as CMA, CAL, CNAS and ILAC on the appraisal certificate of jewelry and jade, which represents the authority of the appraisal certificate used by merchants.
CMA: English abbreviation of China Metrology Certification, which is a comprehensive certification and evaluation of the testing ability and reliability of testing institutions by the metrological administrative department of the people's government at or above the provincial level according to the provisions of People's Republic of China (PRC) and the National Metrology Law. This symbol only indicates that the organization is a unit that has passed the measurement certification review and is a necessary qualification for any unit that issues a jewelry appraisal certificate. The inspection report marked "CMA" can be used for product quality evaluation, results and judicial appraisal, and has legal effect.
CAL: English abbreviation for accredited laboratory in China, which is the symbol of examination, approval and authorization. It is an administrative examination and approval system implemented by the state for quality inspection institutions and authorized national and provincial quality inspection centers and stations that undertake supervision and arbitration inspection tasks under quality and technical supervision departments at all levels. The appraisal certificate with this mark has authority and legal effect.
CNAS is the abbreviation of China National Accreditation Committee for Conformity Assessment, and it is the national accreditation symbol of China Laboratory. The use of CNAS marks indicates that the laboratory has passed the relevant accreditation of China National Accreditation Committee for Conformity Assessment.
Ilac MRA: the abbreviation of international laboratory accreditation cooperation. Its purpose is to establish international cooperation in promoting international trade by improving the acceptance of testing and calibration results released by accredited laboratories.
Any of the above signs is valid, and many jewelry inspection institutions have the above signs at the same time, which has "multiple insurance".
2. Evaluate the details of the certificate
The certificate includes the name, color, clarity, total mass, density and refractive index of the gem, which are very strict in the national certified gem testing institutions.
Compare whether the purchased jewelry and jade are consistent with the samples described in the certificate, including whether the weight of jewelry and the weight on the certificate, and whether the appearance of jewelry corresponds to the photos and color descriptions on the certificate.
The appraisal certificate will be stamped with the official seal of the unit, some with concave-convex steel seal and some with red seal.
3, network query
Log in to official website, the appraisal institution, enter the corresponding appraisal certificate number, inquire about the relevant information of the purchased jewels and jade, and verify them one by one.
Most domestic appraisal institutions can check the authenticity of certificates through the Internet, SMS and telephone. Some authentication institutions have applied QR codes to detect certificates. By scanning the QR codes on certificates, the authenticity of certificates can be checked online. However, some old certificates don't have a QR code, so don't assume that the certificate is fake just because there is no QR code.
Sometimes, the newly issued certificate may not be found online because the data of testing institutions are not updated in time. Doesn't mean there must be something wrong with the certificate. You can call the relevant institutions directly and inquire manually.
If the URL is wrong, the link can't work properly or the corresponding information can't be found, the authentication certificate may be a fake certificate.
Appraisal certificate of jewelry is very important for ordinary consumers to buy jewelry and jade, which can help us reduce being cheated. Be sure to practice more and provide the ability to recognize certificates.