1. bite with your teeth. In normal times, you can identify the authenticity of gold 999 with a bite of your teeth. Gold 999 is pure gold with good color and soft texture. If you gently bite with your teeth, you can leave obvious marks on the surface, while the fake hardness is high and generally will not change.
2. Fire method, or distinguish by fire method. Gold 999 has a relatively high gold content. Burn it at the bottom with a lighter. The surface is black, but it is easy to restore the original color. However, it is easy to change color and even produce irritating smell after virtual fire.
3. Look at this sign. Looking at the logo can also identify the authenticity of gold 999. Real gold 999 jewelry will generally be marked with the logo of au999 or 999, and the merchants will also issue relevant certificates, while the fake surface will not be marked, let alone the certificate and after-sales.
4. Adsorption. According to the adsorption force, the authenticity of 999 gold can also be identified. 999 gold has high purity and pure texture, and will not produce adsorption force after being adsorbed by magnetite. However, when adding other metals to fake gold, it is easy to use adsorption magnets.
5. Look at the color, and you can also identify the authenticity of 999 gold according to the color. 999 gold is pure gold with high purity. The surface colors are mainly red and yellow. If too many other metals are doped, the color will be dark or even slightly gray.