Do you need ID card to go to jewelry identification center
blockchain 1.0, It is mainly based on digital currency, the representative of which is bitcoin
blockchain 2.0, and its main architecture is represented by Ethereum to support smart contracts
blockchain 3.0, which goes beyond the application of digital currency and finance, is widely used in other fields as a technology
to sum up, data scientists like blockchain technology.
that is to say, all kinds of identification instruments such as microscope, refractometer, spectroscope, dichroic mirror, 10x magnifying glass, refracting oil and infrared spectrometer are needed. The most important thing is to have talents in this field. CGC had better ask for FGA and GIA appraisers again, and GIC jewelry appraisers again.
Jewelry identification can be carried out in Beijing's four national testing centers, namely Peking University, Dida, Guojian and Guoshou. These four testing centers are large in scale and high in level. It is better for consumers to consult with a professional large testing institution or a registered quality inspector recognized by the AQSIQ or issue a certificate with legal effect before purchasing
when purchasing, consumers should try their best to choose CMA (laboratory metrology certification), cal (quality inspection agency review and accreditation), cans (National Laboratory Accreditation) "three standards in one" certificate. In particular, we should pay attention to whether there is a cal mark, because the certification authority with this mark is approved by the national quality inspection department, which is relatively standardized
extended data:
is very similar to diamonds, and is the best substitute for diamonds. The identification method is that zircon has polarization and great birefringence. When the processed zircon edge is observed with a 10 times magnifying glass, from the top to the bottom, it can be seen that the edge line at the bottom has obvious double shadow, while diamond has no double shadow
the refractive index of glass is very low, and there is no twinkling color light like diamond; Especially when it sinks into the water, the glass procts have no brilliance and show their feet immediately. Although crystal is a natural mineral transparent crystal, after processing, it looks like a diamond, but it lacks the color light of diamond
Self study can test jewelry appraiser certificate
the application requirements are as follows:
1. Obtain a secondary school degree in jewelry and jade (including geology), and have been engaged in jewelry and jade identification and inspection for at least 5 years; Or non professional secondary ecation, engaged in professional work for 7 years
2. Obtained the relevant professional college degree, engaged in professional work for at least 2 years; Or non professional college degree, engaged in professional work for at least 4 years
3. Bachelor's degree in related major and one year of professional work; Or non professional bachelor degree, engaged in professional work for at least 3 years
4. Obtained master's degree or above in related majors and engaged in professional work for half a year; Or obtain a non professional master's degree or above, engaged in professional work for at least 1 year
5. Employed as professional engineer of jewelry and jade (including geology) or above
extended data
the State implements the registration management for the qualification of quality inspectors, which is registered every three years. During this period, the quality inspectors must always be engaged in the work related to the quality inspection of jewelry and jade, and receive a certain period of re ecation, so as to ensure that they constantly update their knowledge and master the latest quality inspection technology, Maintain a high professional level
Jewelry appraiser's courses:
basic theory of gemmology and relevant laws and regulations, gemmology professional knowledge, gem identification, diamond identification and grading
among them, the first two subjects are theoretical examination, closed book written examination, and the last two subjects are practical examination, which require candidates to use the instrument to operate
all the regular gems and jades inspection institutions in the country will check the authenticity for you, but they will not evaluate the value or provide guidance price for you. This is determined by the regulations and the professional quality of the personnel
your bracelet is A-type emerald, nearly glutinous rice, Youqing dizi. The overall color is gray. The market value is about 1200 yuan
your Guanyin pendant is A-goods, jade, glutinous rice, Youqing dizi. The market value is about 1500 yuan.
As the saying goes, "the expert looks at the quality, the layman looks at the certificate". After all, there are few people who can see the quality of jadeite jade. Most consumers rely on the jewelry identification certificate
ILAC · MRA: abbreviation of International Laboratory Accreditation Cooperation Organization. Its purpose is to establish international cooperation in promoting international trade by improving the acceptance of testing and calibration results issued by accredited laboratories
any one of the above marks is effective, and many jewelry testing and inspection institutions have the above marks at the same time, which means "multiple insurance"
In the certificate, the name, color, clarity, total mass, density, refractive index and other items of gems and jades are included, which are very strict in the national certification of jewelry and jade testing institutionscompare whether the purchased jewelry and jade are consistent with the samples described in the certificate, including whether the weight of the jewelry and the weight on the certificate, and whether the appearance of the jewelry is one-to-one corresponding to the photos and color description on the certificate
the identification certificate will be stamped with the official seal of the unit, some with concave convex steel seal, some with red seal
3. Online inquiry
log on the official website of the appraisal institution, input the corresponding number of the appraisal certificate, query the relevant information of the purchased jewelry and jade, and verify one by one
most of the domestic authentication institutions can query the authenticity of the certificate through the network, SMS and telephone. Some authentication institutions have used the QR code to detect the certificate. Scanning the QR code on the certificate can query the authenticity of the certificate online. However, some old certificates do not contain two-dimensional code. Do not assume that the certificate is fake just because there is no two-dimensional code
sometimes the new certificate may not be found on the Internet e to the untimely data update of the testing organization. If you can't find it, it doesn't mean there must be a problem with the certificate. You can call the relevant organization directly and make a manual inquiry
if there is an error in the web address, the link cannot be normal or the corresponding information cannot be queried, the authentication certificate may be a fake certificate
identifying jewelry identification certificate is very important for ordinary consumers to buy jewelry and jadeite, which can help us rece being cheated. We must practice more and provide the ability of identifying certificate