jose and maria barrera jewelry wholesale How to check Lao Fengxiang's gold bracelet qualification certificate

wholesale real gemstone jewelry Step 1: The logo (the certificate also depends on the logo)
We we can confirm the testing agency of the certificate issued by the certificate on the certificate to obtain the special qualification certification. Essence
"CMA" is an English abbreviation of China Metrology. It is a comprehensive certification and evaluation of the testing of the testing agency by the provincial -level people's governments at the provincial government at or above the provincial people's government at or above the provincial level. The sign refers to the unit that is a unit of measurement and certification review, and it is a qualification that any unit issuing a jewelry appraisal certificate. The inspection report with the "CMA" mark can be used for product quality evaluation, results and judicial appraisal, and has legal effect.

Step 2: Appearance description (check -out)
The next is to confirm whether the jewelery and jade that the purchased purchase is consistent with the sample described in the certificate, including: photos of samples, labels on labels, labels The weight of the certificate, the appearance of the jewelry, and the description correspond to one by one.
photos are direct evidence that distinguish between different jewelry and jade. The identification certificate photos are clear and accurate, which will greatly increase the difficulty of falsification. However, in some cases, because the jewelry style is similar and the photos are similar, it is difficult to distinguish. At this time, the accurate weight is another valid data that can be verified. In addition to photos and weight, the identification certificate will also provide some distinctive appearance characteristics, such as the sugar color of jade, the bracelet's hand inch, and so on.

The third step: the detection content (the most important content)
This should be the test content we are most concerned about, and it is necessary to know which content on the certificate is the most important.
This diamond grading certificate: The most important thing is the color level and clarity level of the diamond. Some certificates also have the proportion of diamonds.
This metal jewelry purity inspection certificate: The most important is of course the type and content of precious metals.
Jewelry and jade appraisal certificate: Test conclusion is the most important. According to national standards, natural jewelry and jade no longer indicate the word "natural", and gems that have been manually treated or synthesized must be clearly shown. (Treatment) "is a specific processing method, indicating that this ruby ​​is a natural gem, but in order to improve its appearance, it has been manually handled by some method; Artificial laboratory is synthetic.
"Remarks" column: Generally, some samples of relatively special states are encountered during general testing, which will be explained and indicated in the remarks. For example, in Hetian Yu's identification certificate, once the surface treatment is involved, the specific processing method will be indicated in the remarks.

It Step 4: Observatory or inspection logo
to prevent the certification of the appraisal agency from being faked, the appraisal certificate must be covered with the seal of the unit. It is a seal stamped after the test.
The large appraisal machines today are heavy anti -counterfeiting. For example, Xinjiang Rock Mine -Jade Monte Quality Inspection Station also added the Internet inquiry function in the new version of it opened in 2007. When querying, you need to enter the batch verification code and the verification code of the enterprise, so that consumers can use convenient ways to verify, and inquire online to understand the relevant information about the jewelry and jade.