As a widely accepted and cherished *** around the world, its value is self-evident. However, there are also many counterfeit and shoddy products on the market. In order to protect their rights and interests, it is particularly important to understand and master some simple inspection methods.
Observe the color: the real ** has a unique yellow luster, and the shade is moderate. If the color of the product is too light or too dark, then it is likely to be a shoddy product.
Weight detection: ** density is larger, so the real ** product will have an obvious sense of weight. If it feels like the product is light and fluttery, then it is most likely not pure gold.
Density: The density of ** is approximately 193g cm, much higher than other metals. The density can be measured using the drainage method, and then the authenticity of ** can be judged.
Hardness test: ** has low hardness and is easy to be scratched. If there are obvious scratches or dents on the surface of the product, it may be a counterfeit product.
Magnetic test: ** Not a magnetic metal, so it will not be attracted to magnets. If the product can be attracted to the magnet, then it is likely to be other metal products.
Listen to the sound: Throw the ** product gently, the real ** will make a dull and long sound, and the sound of the fake and shoddy product will be sharper.
Fire test: real gold is not afraid of fire, the first product is heated in a high-temperature flame, if it is real gold, its color will not change. The color of counterfeit products may change. It is important to note that this method can cause some damage to the sample and is therefore not recommended for use on precious items.
Acidity test: Put ** products into acid, if there are no bubbles on the surface of the product, then it is likely to be real gold. Because ** does not react with acids.
If the above methods still cannot determine the authenticity of **, it is recommended to seek help from a professional organization. The professional organization has advanced testing equipment and experienced appraisers, who can accurately judge the authenticity of the first.
The above are some simple ** true and false test methods, I hope it can help you. When buying first-class products, you must be vigilant and carefully identify to ensure that your rights and interests are not harmed.