Check and evaluate the qualifications of institutions; After you get the jade appraisal certificate, you must first check whether the appraisal institution marked on the certificate has the appraisal qualification. You can query whether the organization is true and effective through the network.

See the printing quality of jadeite appraisal certificate. The real certificate looks very textured, with good printing quality, clear handwriting and standard typesetting. However, the printing quality of fake certificates is rough, the handwriting is not easy to read and the typesetting is not 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)".

Observe the English abbreviation marks on the jade certificate, such as whether there are CMA and other marks. If there is, it means it is a genuine jade certificate. See if 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.

How to identify jadeite appraisal institutions?

Identification of jadeite can go to the local jewelry and jade quality supervision and testing center, which is more authoritative. In addition, in some jade crystal wholesale distribution centers, such as Sihui, Donghai and other cities, there will also be gem testing institutions.

Jade appraisal institutions mainly carry out instrument appraisal according to the appraisal standards formulated by the state, and then judge whether the identified jade is natural jade A goods.

Infrared spectrometer is the most commonly used and effective large-scale equipment to identify jadeite. Natural jadeite has good light transmittance in the range of 2600-3200cm- 1, and there is no absorption peak in most cases. However, the jadeite after filling treatment will have a specific absorption peak because it contains high molecular substances.

By weight identification. Because jade itself has a high density, it will feel heavy in your hand. If it feels light in your hand, nine times out of ten it's fake. When you buy jade, you should weigh it carefully. If you feel heavy, you can basically rest assured. Identified by hardness.

Check and evaluate the qualifications of institutions; After you get the jade appraisal certificate, you must first check whether the appraisal institution marked on the certificate has the appraisal qualification. You can query whether the organization is true and effective through the network.

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.

How and where to identify jadeite?

Jade can go to an authoritative jewelry and jade appraisal institution with national qualification certification for instrument appraisal and issue an appraisal certificate. The simplest way to identify jadeite is: luster: after being soaked 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.

General jewelry appraisal bureau, jade wholesale market, large jewelry stores can identify the authenticity of jade.

Jade can go to an authoritative jewelry and jade appraisal institution with national qualification certification for instrument appraisal and issue an appraisal certificate. In this way, the result is exact, the authenticity is clear at a glance, and it can be foolproof.

How to identify jadeite

We can listen to the sound of jade, such as jade bracelets. First tie the jade bracelet with thin thread and hang it in the air, then tap it with something like a glass rod. The sound of natural jadeite is crisp; The sound made by fake jadeite is dull and not crisp enough.

Secondly, it can also be judged by observing the color source inside jadeite. A goods jadeite has colored roots inside, while fake jadeite has no colored roots inside. Weight identification method Because the density of jadeite itself is relatively high, putting jadeite in your hand and moving it up and down a few times will make you feel heavy.

Look at emeralds, which are unique features of natural jade. Fakes made of imitation glass and ceramics have no emerald characteristics. Listening to the sound, tapping natural jadeite will make a loud and crisp sound, while counterfeiting will make a dull sound, but not all jadeite ornaments are suitable, and bracelets are more suitable.

First of all, look at the luster of jade, jade presents glass luster, followed by water head and internal structure. . The water head is the brightness of jadeite. The higher the water head, the better and more precious the germplasm is. Be very careful when investigating the jade head, because the brightness is related to the thickness of the jade itself.

How to identify the jade certificate? How to identify jadeite certificate

Look at the license number. Every jadeite appraisal certificate will have a corresponding certificate number. This number is the key to test the authenticity of jadeite. The number on the back of the appraisal certificate should be consistent with the number posted on the back of the object. The appraisal agency will also provide a way to check the authenticity of the serial number.

No number: Jade certificates are generally numbered, which is a sign to check whether the number of certificate frames is true or false. False certificates generally have no serial number, in order to prevent us from finding that the certificate is false after checking the serial number. A jade certificate without a number is equivalent to a blank sheet of paper.

See the printing quality of jadeite appraisal certificate. The real certificate looks very textured, with good printing quality, clear handwriting and standard typesetting. However, the printing quality of fake certificates is rough, the handwriting is not easy to read and the typesetting is not standardized.