Consumers buy expensive red sapphires, diamonds, amber, jade, etc., relying on the identification certificate. However, what consumers are not surprised is that the jewelry and jade identification certificates are mixed. A few days ago, in the Municipal Product Quality Supervision and Inspection Technology Research Institute and the National Gold and Silver Jewelry Quality Supervision and Inspection Center (Tianjin), some jewelry with "certificate" testing frequently had problems.
Amber with "certificate" is not authentic
A few days ago, in the waiting hall of the Municipal Product Quality Supervision and Inspection Technology Research Institute, the National Gold and Silver Jewelry Quality Supervision and Inspection Center (Tianjin) (Tianjin Jinbao Jewelry Supervision and Inspection Center), Mr. Sun, who is waiting for the identification results, was seen. He said: "I bought a bunch of green bead bracelets some time ago. The price is very high. At that time, I also asked the merchant whether there is an appraisal certificate. The other party told me with certainty that I must bring a certificate, so I am particularly relieved." The land continued: "Until a few days ago, after seeing this string of hands, a friend said that it was wrong. I have to let me go to the authority to check it again. No, I will come with a certificate." See Mr. Sun. The certificate held in the hand, with the words "national name". After about half an hour, Mr. Sun got the preliminary results. After the expert's sensory inspection and infrared spectroscopy, the bracelet material was not amber, but Colombian natural resin. This result is completely different from the identification result of Mr. Sun’s “Certificateâ€.
Individual foreign certificates also have flaws
According to professionals, consumers' enthusiasm for jewellery has also led to another "industry" - the development of third-party testing institutions to identify the market. An authoritative source who has been engaged in jewelry appraisal for many years said that since buyers are paying more and more attention to the identification certificate of goods, sellers will try their best to purchase certificates, and individual for-profit testing institutions will ignore third parties. The authority of the testing organization and the issuance of certificates can disrupt the market. In the interview, I also learned that individual businesses often use the blindness of consumers to foreign certificates. In the quality supervision department, I saw a diamond test result. Experts said: "These diamonds are purchased by consumers in this city and other provinces and cities. They all carry the EGL (European Gemological Association) certificate, but we have found that diamonds, such as diamonds. The level, color level, clarity, etc., the actual test value does not match the certificate mark, and some of the numerical levels are much lower than the level marked by the certificate. According to experts, because the current diamond level does not have a unified international standard, individual "foreign" Certificates often use the “standard of their own†as an excuse to evade responsibility.
Please look for the "three-in-one" certificate
According to the quality inspection department, the cases in which “certificate†products were detected in the past six months showed a rapid growth trend, increasing by more than 30% year-on-year. In the face of the "certificate of identification", what should consumers do when they buy jewelry? To this end, I visited relevant experts. Cao Weiyu, director of the National Gold and Silver Jewelry Quality Supervision and Inspection Center (Tianjin), said that consumers should choose CMA (laboratory measurement certification), CAL (quality inspection agency approval), CANS (national laboratory) when purchasing such products. Approved) "Three-in-one" certificate. He stressed that it is especially important to pay attention to whether or not there is a CAL mark. Because the identification certificate with this mark is issued by the national quality inspection department, it is relatively standardized.
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