Look carefully at whether the shop opening organization that issued the inspection certificate of jadeite jewelry has the right to issue the jadeite appraisal certificate.

There are several points to understand the certificate: look at the appraisal conclusion: the conclusion of the appraisal certificate must be standardized.

Only natural A goods will issue the certificate of "Jade" result. If it is grade B jadeite, one of the appraisal results in the certificate will be marked as "jadeite (treatment)", "jadeite (glue injection)", "jadeite (grade B quality)" or "jadeite (optimization)". C Jade will be marked with "Jade (Dyed)".

Telephone inquiry. The appraisal certificate issued by a regular jade appraisal institution can be queried directly by calling the fixed telephone on the certificate. Generally speaking, there is a special telephone operator responsible for answering and answering questions about certificates. Therefore, it is very convenient to check the authenticity of the certificate by telephone.

Logo: First, look at the English abbreviation logo on the jade certificate, such as whether there is a logo such as CMA. If there is, it means that it is a genuine jade certificate.

First of all, official website can inquire whether the institution that issued the jade jewelry inspection certificate has the qualification to issue the jade appraisal certificate. Secondly, look at the first line of the certificate, whether there is a "CMA" national measurement certification mark, and C contains "MA"; Whether there is "CAL" national quality supervision, examination and approval.

There is no color on the jade inspection certificate.

1. Although the color of jadeite seems to be its overwhelming feature, some jadeite inspection certificates do not have detailed information about color. This is because the color of jadeite depends not only on the characteristics of the stone itself, but also on the treatment method and light of the stone.

2. This is not the basis of one-vote veto. The testing contents of some institutions are surprisingly simple, but the authenticity cannot be absolutely denied. Please upload a clear photo of the real thing, and I can help you make a specific judgment.

3, this is not a fake, but a natural jade A goods, the authenticity is beyond doubt. Waxy seeds, melted ground, pale waxy gray background, sitting Buddha pendant, 7 grams, the current jade market, in 600 ~ 800 yuan. There are three kinds of documents: complex documents, the most detailed documents and the highest fees. Standard certificate, all test items have test marks.

4. Explain that the color of jewelry may be natural or artificially changed, which can't be recognized by ordinary instruments. This is because the color change of most jewelry is caused by radiation and heat treatment.

There is nothing wrong with the certificate, which means that your jade bracelet is natural. The certificate does not indicate that Jade A is normal, but the description of natural color is normal. If the treated jadeite is not marked as treated or B goods, it is not normal.

6. Test conclusion: The normal test conclusion is written as "jade". If jade is optimized, describe it relative to it. Quality/gram weight: gram weight of jadeite. Jewelry name: jade pendant, jade bracelet, etc.

Why is the hardness on the jade certificate?

The hardness of jadeite is 5-7 degrees. Hardness refers to the ability of jade to resist external influences, such as characterization, wear and indentation, which is an inherent characteristic of minerals themselves. Hardness is one of the main signs to identify jade factory, which is very important for jade processing. Jade, also known as jadeite, jadeite, jadeite and Burmese jade, is a kind of jade.

The hardness of jadeite is 5 ~ 7. Scratch the surface of jadeite with a knife, there will be no trace, which is a common method to identify jadeite. The hardness of jadeite is related to its own material. It is a collection of various minerals, mainly composed of pyroxene minerals, mainly jadeite minerals.

The hardness of jadeite is about 5~7, and it is the hardest jade. In general, the higher the hardness of jadeite, the higher the quality. Only when the hardness reaches a certain value, jadeite will be stiff. Jade is the hardest jade. Generally speaking, there will be no scratches on the surface of jadeite.

The hardness of jadeite has a specified value. Generally, if it exceeds or is less than this value, it is not jade, nor is it a false identification.