How to read the results of the identification of the emerald certificate jewelry

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Jade certificate how to read identification results you jade Friends of the purchase of Jade common a most effective identification Jade authenticity sales business identification certificate issued by the national authority. National authority certificate of authenticity of jade identification accuracy is quite high, it should be said there is little leakage goods There is national authority a certificate issued by the emerald in its identification of the results of a natural A cargo jade results only Please note the following several aspects: first, only natural A cargo, will be issued a certificate of second, if B jade certificate identified a marked Jade (processing), Jade (plastic injection), Jade (B goods) (optimization). C Jade Cargo will be marked fourth, Jade Cargo, a certificate of authenticity results, does not appear the word stained quartzite fifth, the certificate should be a one-to-one correspondence, that is something that a certificate, and the certificate should have a picture of the item and the weight. While some things from a raw look very similar, but jade jewelry is not exactly the same. Something with the certificate does not prove that the quality of the whole batch of things. Some businesses in order to save costs, only a certificate as a sample, is also very similar to the photo on the goods and in-kind, this does not conclude that this batch of goods they sell are natural, this practice does not comply with state regulations. sixth emerald basic physical, chemical, and optical characteristics should also be indicated on the certificate. refractive index: 1.66 (This is different from other gemstones emerald specific refractive index); density: 3.33 (jade and other precious stones distinction characteristics); zoom detection: fiber woven structure (which is the emerald a unique structure); absorption spectrum: 437nm absorption line (Emerald unique absorption spectrum);

filter checks: no reaction (some dyed jade color filter becomes red); gloss: aggregates (Jade micro-mineral aggregates);