Pure gold 999 is one of the jewelry materials we are familiar with, because of its high purity, pure gold 999 is relatively scarce, so it is relatively expensive. However, it is precisely because of its high level that there are also some counterfeiting phenomena in the market. Therefore, when buying pure gold 999, it is very important to check its authenticity, and the following are some ways to test:
1.Feel it by hand: Pure gold 999 is generally a relatively soft metal, which feels a bit similar to the feeling of brass, and it is unlikely to be hard. In addition, the color of pure gold 999 is relatively dark and will not sparkle. If the metal feels hard and the color is too bright, it may be a fake.
2.Density test: Because the pure gold content of pure gold 999 reaches 999%, the density is also relatively large, and it is difficult for general fakes to achieve the same density, so it can be judged by weight. If there is a big difference in the weight of metal of the same size, it is most likely not pure gold 999.
3.Acid-base immersion test: can be tested at home with dilute hydrochloric acid. **Pure gold 999 will not be corroded by acids, while artificial metals and alloys are easily corroded by acids. Put the jewelry in hydrochloric acid, real gold products are not easily melted. In addition, real gold is also difficult to corrode in a solution of nitric acid. Therefore, a solution of nitric acid can be used to identify real gold.
4.Merchant qualification: Pure gold 999 needs to be authorized to produce, legal merchants must have production and marketing licenses, and regular jewelry stores will also have relevant qualification certificates. If you don't have these documents at the time of purchase, it's likely to be a fake. When purchasing, be sure to check the merchant certificate to ensure that the content of the certificate is clearly visible.
5.Light shadow under flood light: Put pure gold 999 under the backlit lamp and observe the light shadow it produces. If the shadow of the lamp is even, bright, and there is no deep depression (because pure gold 999 is soft), this can be proved to be true.
The above is the identification method of pure gold 999, these methods can effectively distinguish the real from the fake, but it should be noted that some fakes are difficult to identify after special treatment, please try to buy regular jewelry stores or prove that their ** merchants sell.
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