When you watch TV, you must have seen such a scene, that is, you can identify the authenticity of gold with a bite, because the texture of gold is soft, and teeth marks will appear with a bite. If there are no tooth marks, it must be fake gold.

Second, use fire

As the saying goes, "real gold is not afraid of fire", which means that real gold is not afraid of high temperature. The melting point of gold is above 1000 degrees, and it can be burned. Real gold won't change color. If it changes color or melts, it must be fake gold.

Third, listen to the sound.

When you hit gold, real gold will make a "bang, bang" sound, while fake gold will make a brittle sound, usually a "bang" sound.

Four, ceramic scratch test method

Use unglazed ceramics. Scrape gold products with ceramics. If it is a black scratch, it means that the product is not gold. If it is a golden scratch, it means that the product is golden.

Verb (abbreviation for verb) magnet test

This is a simple test, but it is not a sufficient proof to prove whether it is real gold. You can find a powerful magnet to do the test.

Gold is not a magnetic metal. If the product is attracted by a magnet, it is enough to prove that the product is not gold. But it can't be proved that the product is gold just because it doesn't respond to magnets, because there are many non-magnetic metals.

Extended data:

Pay attention to wearing thousands of gold:

1. Although gold has a high durability, if you don't care about jade, there will still be scratches or pits on the surface of gold jewelry, especially jewelry worn on your hands, such as rings and bracelets. So remember to take off the gold jewelry before doing strong activities.

2. Italian chemicals. The natural enemy of gold is liquid chlorine. Repeated exposure to chlorine will weaken the internal structure of gold and eventually lead to fracture. So keep gold jewelry away from chlorine-containing detergents, swimming pools and bathtubs.

3. The chemical components such as acid and abrasive contained in the cleaning liquid at home will damage the luster of the surface of gold jewelry, so remember to wear rubber gloves when cleaning under heavy tasks, and of course it is best to remove them.

4. Gold jewelry has been polluted by cosmetics such as sweat, dust and perfume for a long time, and it is easy to lose its original luster, so it should be cleaned regularly. You can wash it with mild soapy water or go to a professional jewelry store for steam washing. After cleaning and rinsing, be sure to wipe it with a suede or clean soft cloth to avoid scratches.

5. Proper storage is as important as cleaning. When not in use, put it carefully in the jewelry box-it is best to wrap a soft cloth-and it is best to store all kinds of jewelry separately to avoid entanglement or friction.

6. Check whether the gold jewelry is cracked or damaged at any time, especially the retaining ring-elastic, safe and reliable; Claw-avoid breaking, bending or loosening, and prevent the gem from falling off; Earrings and needle backs-avoid bending or loosening, and the joints of long-term hanging ornaments such as wedding rings and pendants.

Baidu encyclopedia-thousands of gold