Gold and silver jewelry has always been a precious metal that people like very much, but now most of the gold and silver jewelry on the market are easy to be adulterated, so many people think of buying online, and many stores also say they can issue jewelry testing certificates! So how to identify the authenticity of the test report? Let's have a look
1. See the selling price:
Under normal circumstances, the cost price of sterling silver bracelet = cash price of silver + processing fee. The cash price of silver (silver block price) fluctuates every day. You can check the price online. If the cash price of silver is 4 yuan / g; The processing cost of bracelets is priced according to the complexity of the process, and the general processing cost is 1-4 yuan / g. Therefore, when the two items are added together, the purchase cost price of today's silver bracelets is generally between 5-8 yuan / g.
When I see the selling price of silver bracelets, I will silently calculate an account. Excluding intermediate costs (such as express delivery fee, identification certificate fee, packaging fee, etc., generally no more than 20 yuan), how much is each gram of silver bracelets worth.
If the price minus the intermediate cost is less than 5 yuan today, please beware of fake goods.
2. See the steel seal of the certificate:
The real inspection certificate is definitely not smooth. There is a steel seal of the inspection center. Because the steel seal is transparent, the effect of steel seal is not photographed in the picture, but in fact there is.
If the inspection certificate received does not have the steel seal of the inspection center, please beware of fake goods.
3. Check the test number of the certificate:
The detection number is the ID card of silver jewelry, which corresponds to silver jewelry one by one. A detection number corresponds to only one silver jewelry. The detection numbers of different silver jewelry of the same style are different.
If you see the same silver jewelry with the same test number, please beware of counterfeits.
4. See the total weight of the certificate:
The total weight is the weight of the silver jewelry measured, accurate to kilogram. Because the weight of different silver jewelry of the same style is slightly different, the total weight shown on the certificate will be slightly different between different silver jewelry of the same style.
If you see the same total weight of all silver jewelry, please beware of fake goods.
5. See the precious metals in the certificate:
Full silver means that the silver content is not less than 990 & permil; Pure silver ornaments, also known as full silver; S925 silver, i.e. the silver content is not less than 925 & permil; Because silver is soft, for inlay or necklace products, appropriate other elements should be added to increase the hardness.
According to the new regulations of the regulations on the purity and nomenclature of precious metals in jewelry (gb11887-2012) recently issued by the National Standards Commission, the purity nomenclature of "thousand foot gold", "thousand foot platinum", "thousand foot palladium" and "thousand foot silver" will be cancelled in the new standard. The content of precious metals is more than 990 & permil; Jewelry must be marked as' full gold '(platinum, palladium, silver). The new regulations will be implemented from May 4, 2016.
If you see that the test certificate prepared after May 4, 2016 shows' thousand foot silver 'or' ten thousand foot silver ', please beware of fake goods.
6. Identification information of nuclear testing certificate, official website query of testing center and anti-counterfeiting code query:
There is a certificate preparation date on the test certificate. Generally, 7 days after the certificate preparation (the time for the test center to upload the identification information to the official website will generally lag, and the information upload can only be entered by the person of the test organization). You can query through the official website of the test center on the test number, scan the anti-counterfeiting code on the certificate, check the test certificate, visit the website of the test center Whether the authentication information queried by the anti-counterfeiting code is consistent.
If the identification information of the three is inconsistent, please beware of fake goods.
7. Total weight of nuclear certificate and physical object:
The weight of different silver ornaments of the same style is slightly different, and the weight on the certificate is accurate to kilogram. If you have a kilogram scale, you can weigh the real object after receiving the goods, which is consistent with the weight on the certificate.
If the total quality of the certificate is inconsistent with that of the real object, please beware of fake goods.
8. If there is no kilogram scale, it can be replaced by other scales with less accuracy. After rounding, check whether the total weight of the test certificate is consistent with the total mass of the physical object.
Due to the environmental impact, weighing will also have marketing, so there may be a certain reasonable error (generally no more than 0.1g) when checking the certificate with the total weight of the physical object.