There are generally three kinds of qualification marks for qualified national jewelry and jade testing laboratories, and those marked with "CMA" are units that have passed the evaluation of national or provincial metrological certification and evaluation institutions; "CAL" means a nationally recognized testing institution; "CNACL" is a testing organization approved by China Laboratory; These three are the most authoritative testing institutions.
All first-tier cities and most second-tier cities in China have qualified laboratories of jewelry and jade testing institutions, and major jade processing distribution centers in China also have qualified jewelry and jade laboratories, which can be searched on Baidu map.
For ordinary consumers, the authenticity identification of jade bracelets can be completed by consulting the inspection certificate. As long as the institution that issued the inspection certificate has the above-mentioned inspection qualification, it can re-examine the certificate in the official website of the inspection institution. The jade bracelet, certificate and re-inspection results are consistent, and it can basically be determined that it is genuine.
It should be noted that the professional jewelry testing laboratory is only responsible for the identification of jade bracelets, not for the quality evaluation. Therefore, if you need to identify the quality of jade bracelets, you need to find auction companies, pawn shops, jewelry stores and so on. Evaluate, but the evaluation results can only be used as your own reference.