Gold jewelry identification method

Gold jewelry refers to jewelry made of gold as its main raw material. Because of its value, there are many unscrupulous elements on the market that try to take away the majority of benefits. The authenticity of gold jewelry is difficult to distinguish with the naked eye, the following Xiaobian tell you a few tips for identification.

1, see the color: the higher the purity of gold jewelry, the darker the color. According to the following color to determine the general color: deep red and yellow color in more than 95%, pale red yellow 90% to 95%, light yellow 80% to 85%, green 65% to 70%, color white with only 50% white ~60%, slightly yellow and white, less than 50%.

2. Weight: The proportion of gold is 19:32, which is more important than silver, copper, lead, zinc, aluminum and other metals. As the volume of gold is more than 40% heavier than silver, 1.2 times heavier than copper and 6.1 times heavier than aluminum. The gold ornament should be in the hands of sinking, fake gold jewelry will feel light. This method does not apply to gold jewelry with a gemstone.

3, see the hardness: pure gold soft, low hardness, with nails can draw a shallow mark, teeth bite can leave teeth, high quality gold jewelry is lower than the fineness of the soft, more copper and more hard, bending method is also Can test hardness, pure gold is soft, easy to bend, the lower the purity, the more difficult to bend.

4. Listen to the sound: When the fineness of 99% or more of real gold is thrown on a hard ground, it will sound like a buzzing sound, no sound and no elasticity. Fake or low-tone gold sounds are crisp but not boring. They generally sound “dang-dang” and sound reverberate. They jump violently after landing.

5, with the fire: use the fire will identify the jewelry burning red (do not make the jewelry melting deformation), observe the color change after cooling, if the surface is still the original gold color is pure gold; if the color is darkened or varying degrees of black, then Not pure gold. The lower the general color, the darker the color, all black, indicating that it is a fake gold jewelry.

6, with acid points: on the touchstone were worn out of the identification of jewelry and the card of the Golden Road, with a glass rod to try ** in the Golden Road, because the gold is chemically stable, does not react with acid, so the color does not change. If it is not gold or non-pure gold, it will disappear or change. The law of change is "three quicks, three slows", that is, the low quality disappears quickly; the high quality disappears slowly; the mixed gold disappears quickly and the clear gold disappears slowly; the large mixed gold disappears quickly and the small mixed gold disappears slowly. Depending on the disappearance of the gold road, comparing the cards can determine the gold jewelry fineness.

7, see the mark: domestic gold jewelry are purified and formulated according to international standards, and stamped, such as "24K" marked "foot red" or "full gold"; 18K gold, marked "18K"; color below 10K According to the regulations, it is not possible to call K gold printing numbers. At present, lawbreakers in the society often produce fake or imitation stamps, and use rare gold, gold, or even brass as false gold. Therefore, gold jewelry must be judged based on samples to determine whether it is genuine or not.