1. This needs to be inquired according to the website provided on the certificate. After entering its website, enter the certificate number and weight. Look carefully at the back of the appraisal certificate to see which appraisal institution issued it, whether it is Chinese characters or certificates issued by provinces and cities, because different units have different inquiry websites.

2. The certificate number or inspection number on the certificate can be used to check whether the purchased goods are consistent with those on the certificate. If there is a code on the jade, it can also be compared with the code on the certificate. Secondly, the refractive index on the certificate, 66, is the most common structure of jadeite and the most important feature that distinguishes jadeite from other jadeites.

3. The old card has no QR code. Enter the URL on the certificate on Baidu, and then enter the certificate number to query.

4. Absorption spectrum: 437nm absorption line (unique absorption spectrum of jadeite) 7. The certificates of general jewelers are entrusted to the provincial jewelry and jade appraisal center for testing, which can be found through official website, and it is absolutely impossible to forge them.

How to query the certificate number of jade bracelet How to query the certificate number of jade bracelet

Website query. Generally, most formal and legal jade appraisal institutions have their own websites to provide inquiries about their appraisal certificates. As long as you log in to the website, you can find the relevant data of the certificate on the website by entering the number of the jade identification certificate and other contents as prompted by the website. Telephone inquiry.

If you want to check the authenticity of the jade bracelet, you can check it on the website of the identification center for identifying the jade bracelet. Generally speaking, a real certificate can be found by its number.

Network query. Now the appraisal certificate can be searched online. Most appraisal certificates generally have appraisal websites written on them. You can click on the websites above to check whether this gem exists, so as to confirm the authenticity of jadeite. Telephone inquiry.

Jade identification certificates generally have a string of detection numbers on them, usually on the opposite side of the certificate. There must also be the telephone number and website address of the appraisal unit, which is generally on the front of the certificate. Call for advice, tell the test number and ask the other party to tell the appraisal result.

How to see the authenticity of jade bracelet certificate

1. First look at the jade appraisal institution. At present, the most authoritative appraisal institution in China is NGTC, which belongs to the institution directly under the Ministry of Natural Resources, so the jade inspection certificate issued by NGTC has national authority and effectiveness.

2. Observe the English abbreviation marks on the jade certificate, such as whether there are CMA and other marks. If there is, it is a genuine jade certificate. Check whether the jade certificate has a number. If it has a number, it means that it is a real jade certificate. Otherwise, if it has no serial number, it means it is a fake jade certificate.

3, the jade bracelet certificate is so true and false. First of all, look at the sign: CMA-the sign that the testing institution has the qualification of measurement certification, and the institution with this sign is a statutory inspection institution. CAL- is the symbol of inspection organization approved by national quality inspection, and the organization with this symbol is qualified to make arbitration inspection conclusion.

How to read the certificate corresponding to the jade bracelet

1. Jade bracelet appraisal certificate front: it is the issuing unit, and the testing organization can be the quality inspection station under the provincial quality supervision bureau, and the quality inspection station under the municipal quality supervision bureau can also be used. Some colleges and universities offering jewelry majors are also eligible to issue appraisal certificates.

2. First, carefully look at whether the shop opening organization that issued the jade jewelry inspection certificate has the right to issue the jade appraisal certificate.

3. Looking at the jade certificate mainly depends on the description of the jade identification elements. Such as certificate number, inspection conclusion, jadeite gram weight, size, refractive index, density, amplification inspection, etc.

4. The identification of the certificate of jade bracelet can be carried out by checking the mark of the certificate and checking the authenticity of the certificate.

5. If the jadeite certificate issued by the national authority is not natural jadeite, the result is only "jadeite", and the words "A" and "natural" will not be marked. Only natural A goods will issue the certificate of "Jade" result.

How to identify the authenticity of jade bracelets and how to test the authenticity of jade bracelets

1, gloss. After soaking in strong acid and alkali, jadeite has loose structure, and there are pits on the surface before it is full, which makes it spread and its luster weaken. After adding organic fillers such as resin or plastic, jadeite often appears resin luster or wax luster, or glass luster mixed with resin luster and wax luster. Color.

2. Look at the cracks on the jade bracelet. Carefully observe whether there are cracks in the bracelet, which mainly refers to the cracks produced during the mining and processing of raw materials, and understand the size of the cracks and the influence of the cracks on the appearance and service life of the bracelet. Make a comprehensive and detailed observation of the front, back, inside and outside of each bracelet under the light.

3. Natural jadeite is formed in natural environment, and there will be impurities in it. If the interior of jadeite is pure and free of impurities, it may be fake. Jin Yu will have a certificate. According to the information on the certificate, you can check whether this jade is real or not online.

4. Color of jade bracelets: The color of fake jade bracelets is usually even and dull. The color of natural jade bracelets is usually uneven and natural. Moreover, under the magnifying glass of 10 times, the color of the fake jade bracelet will be distributed along the gap and gradually spread from outside to inside.

5. Look. Look at its characteristics, structure and color, and check its defects. A kind of jade, with dense and fine structure, smooth and smooth, is called "emerald". There are three main characteristics: "floc", "orange peel phenomenon" and "flying wing"

6. If it is glued or colored jade, it will look a little foggy and shiny. Through the luster of jade bracelets, we can also judge the authenticity of jade. Of course, if you carefully observe the internal structure, you will also find that natural jadeite is dense in texture, and it will feel sticky and hard through reflection.

What does the size of the jade bracelet mean?

1, there are four sizes of jade bracelets: small, standard, medium and large. Generally speaking, the diameter of small jade bracelet rings is 50-54 mm, the diameter of standard jade bracelet rings is 55-57 mm, the diameter of medium and large jade bracelet rings is 58-60 mm, and the diameter of large jade bracelet rings is greater than 60 mm.

2. This is the data of inner diameter and ring mouth, in millimeters! For example, 57-65 indicates that the outer ring diameter of the bracelet is 65 mm and the inner ring diameter is 57 mm. From 65-57, it can be concluded that the thickness of the bracelet is 8 mm, which belongs to a thick bracelet and is suitable for women with a hand length of 57 mm.

3. The number of bracelet rings is called the ring mouth in the industry, which is based on the length of the inner ring diameter of the jade bracelet. Usually, the diameter of the inner ring of an emerald bracelet is between 50mm and 72 mm, and the ring mouth 50 indicates that the inner ring of the bracelet is 50 mm, and so on.

4, jade bracelet mainly according to caliper, soft ruler, ruler and other tools to measure the number of laps. Caliper number measurement, according to the caliper to measure the width of the palm tiger's mouth, to judge the size of the jade bracelet ring number. The method of measuring the palm ring mouth with caliper is more efficient, and of course the error is also a little larger.