Does good jade require national inspection and certification?

I want to buy a jade bracelet from a time-honored jadeite store. What is the authoritative certificate of jadeite?

Look at the logo. Generally, genuine jadeite certificates will have English abbreviations on the top. sign. For example, CMA, CAL, CNAS, among which CMA is a must. It is the basic requirement of national law for testing and inspection institutions. If not, the certificate will be invalid.

The national level is approved by the state, universally recognized by the state (available for online inquiry), and is the most authoritative. The municipal level is approved by the local government (if the certificate is authentic, it will be valid). Just like a diploma.

The authenticity of the jade bracelet certificate can be distinguished by two methods: checking the mark on the certificate and checking the authenticity of the certificate.

Look at the opening organization of the certificate. First, take a closer look at the institution that issued the jade bracelet inspection certificate to see if it has the right to issue an jade appraisal certificate. Look at the certification mark on the certificate. What does the appraisal certificate of jade jewelry mean?

The jade appraisal certificate can prevent authenticity. A jadeite appraisal certificate is like an ID card, a certificate that proves your identity. Jadeite with an appraisal certificate is always more reassuring when buying; because jadeite with an appraisal certificate proves that the jadeite is Natural, quality guaranteed.

Having an identification certificate is a protection for customers. You will understand when you go to the "Royal Family Premium" website.

The A certificate generally concludes that jadeite or jadeite is A, and some remarks columns also have the words commonly known as A. Like other styles of jade, A-grade jade bracelets refer to bracelets made of natural jade. They have not undergone any chemical treatment processes and maintain the unique luster, color, texture and other characteristics of natural jade.

Look at the remarks column of the appraisal certificate: If the inspection conclusion column of the certificate shows jade (processed), it proves that the sample is made of jade, but has undergone non-traditional artificial methods that are not yet widely accepted. Processing methods.

Natural jadeite with certificates may not necessarily be authentic. The identification certificate may also be fake. It is not that difficult to identify the authenticity of the appraisal certificate. The first thing is to see whether the inspection agency is legal. The state has strict qualifications for jewelry and jade quality appraisal institutions. Only after passing the accreditation can the appraisal certificate issued be valid.

Only if it is a natural product, a certificate will be issued stating that it is jadeite. If it is B-grade jadeite, the appraisal result on the certificate will indicate Jadeite (processed), Jadeite (glue injection), Jadeite (B-grade) or Jadeite (optimized). C-grade jade will be marked as jade (dyed). Jade certificate, what is the difference between national inspection and provincial inspection?

Hello ~ According to regulations, the same standards are implemented and have the same legal effect. According to my many years of experience, in addition to using national inspection in Guangdong, you can use provincial inspection in Guangdong. In the jade market, the Guangdong Provincial Inspection and Quarantine’s words are quite weighty. After all, they are the processing and distribution center of jade, the place with the highest market recognition.

The national level is approved by the state, universally recognized by the state (available for online inquiry), and is the most authoritative. The municipal level is approved by the local government (if the certificate is authentic, it will be valid). Just like a diploma.

The difference between the national inspection certificate and the provincial inspection certificate is that the national inspection certificate is more authoritative and has legal effect. In principle, both national inspection agencies and provincial inspection agencies have been strictly audited and certified by relevant national departments, and their professional authority is guaranteed by law.

National inspection certificate, provincial inspection certificate, and certificates issued by universities and third-party testing agencies. Jade, also known as jadeite, jadeite, and Burmese jade, is a type of jade. The correct definition of jadeite is a fibrous aggregate composed of pyroxene minerals, mainly jadeite minerals.

Types of jade certificates: Generally speaking, common jade appraisal certificates can be divided into three types, namely, national inspection certificates, provincial inspection certificates, and certificates issued by universities and third-party testing agencies. National Inspection and Quarantine is affiliated to the Jewelry and Jade Jewelry Management Center of the Ministry of Land and Resources. It is the setter of China’s jewelry industry standards and the most authoritative testing organization, referred to as NGTC.

The National Inspection and Quarantine Bureau and local testing agencies are independent, so the test results of Yunnan Provincial Inspection and Quarantine can only be found on the website provided by it. They are all quality-certified, that is, CMA, all over the country. It is valid, but the business scope is different. The business scope of Yunnan Provincial Inspection is definitely focused on Yunnan, but it is valid throughout the country. What kind of jade can pass the Shenzhen National Inspection

1. The poster's statement is wrong. It should be - only jade that is natural in texture and has not been processed by artificial pickling, glue injection, dyeing or other unconventional processing can be used. Issue a National Inspection A cargo certificate.

2. First of all, old jade can pass the test and obtain an appraisal certificate. However, there are two situations where it cannot pass the machine inspection: 1. Modern people’s pickling, glue injection, and dyeing treatments optimize antique jadeite, which is currently very common. Under the banner of saying that old jadeite cannot pass the inspection, the fakes are justified.

3. The criterion for passing the National Day is safety. If the safety performance passes the standard, there should be no problem.

4. Check the identification result. If it is not natural A-grade jade, the result will not be marked with "A-grade", "natural", etc. It must be noted that only natural A-grade jade will Only then will a certificate with the result "Emerald" be issued.

5. Laokeng imperial green glass from the Qing Dynasty can pass the national inspection if it is re-polished. Raman testing can also be used to identify authenticity. Don’t stop talking nonsense like these people. . They don’t understand at all, I’m not laughing at them, they have never seen the Laokeng Emperor Green Glass Species.

6. Most of the jadeite from the Qing Dynasty cannot pass the national inspection, because the national inspection standard is a new kind of jade from mountain materials. The certificate is not based on data. Data only determines what the material is, not based on valuation.