Put the gold ware in a small stainless steel container, drop a drop of nitric acid on the gold ware and observe the reaction. If the acid solution is green, then the gold ware is either made of ordinary metal or plated with gold. If it is gold, it is gold-plated copper. If it is milky white, it is gold-plated silver. If there is no response, then the gold is real.

2. Listen to the sound

Real gold with a purity of more than 99% will beep when thrown on the hard ground, which is disorganized and elastic. Fake or low-quality gold sounds crisp and dull, generally making a "Dangdang" sound, with a lingering sound, and violently beating after landing.

Step 3 consider

The specific gravity of gold is 19.3g/cm3, and the fineness is closely related to the specific gravity. When the specific gravity is close to 19.3, the content of pure gold is higher. Weigh it by hand to see if it is commensurate with its size. Large and light shapes may be adulterated. But generally, if you hold it in your hand, you can feel that it is real gold jewelry when you feel a little heavier, indicating that the gold body is small and heavy. Beware of silly light ornaments and carefully distinguish whether they are fakes or semi-fakes.

Extended data

Jewellery discrimination

Among gold jewelry, pure gold jewelry is soft in texture, with teeth marks, easy to bend, golden in color, pure and soft, and heavy in touch. K gold jewelry is slightly hard and toothless, and its color is yellow with white. With the decrease of K number, the white gradually increases and the yellow gradually becomes lighter. K gold jewelry is not as heavy as pure gold jewelry. In addition, pure gold and K gold jewelry are stamped.

The seal on gold jewelry can be represented by the word "gold" or the English letter "Kg". When indicating the gold content, the words "99" or "24K" indicate pure gold jewelry, and K gold jewelry indicates the corresponding K number according to the different gold content. For example, K gold jewelry marked "18K" has a gold content of 75%.

In addition, there are seals on the jewelry, indicating the origin of different manufacturers. Real gold jewelry, with standard, complete and clear seal, is an important identification mark.

There are many kinds of jewelry that are easily confused with gold jewelry, including gold-plated jewelry, gold-plated jewelry, copper jewelry, copper alloy jewelry and so on.

Baidu encyclopedia-gold jewelry