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.

Four, ceramic scratch test method

Verb (abbreviation for verb) magnet test

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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.

There are six ways to test the authenticity of gold:

First, visual inspection.

1, check the official symbol of gold. Generally 999 or 990, or 10K, 18K, 22K, 24K. Anything below 10K is not considered, because the gold content is too low. If you look at it with a magnifying glass, you will see it more carefully.

2. Ancient gold ornaments will not have obvious official purity marks.

3. Of course, fake gold ornaments will also have official marks, so further inspection is needed.

4. Look for obvious discoloration. Check the worn area of the gold surface, usually at the edge of the gold product, and check the discoloration there. If the gold gradually disappears and becomes another color, then the product is only gilded.