In costume dramas, there is often such a plot. Some people use their teeth to bite gold to distinguish the true and false of gold. Pure gold is low in hardness and will leave a tooth print if bitten with a tooth. Therefore, when identifying pure gold, you can try its hardness. If the hardness is too high, it cannot be pure gold (except 3D hard gold). The following Chinese gold provides you with several simple identification methods.
First, you can see the color of gold. The higher the purity of gold jewelry, the deeper the color. In the absence of a gold medal, the general color can be determined according to the following color (according to the green gold standard. The so-called green gold is only containing silver in gold); the deep red and yellow color is above 95%, and the light red is yellow 90--95%. , light yellow is 80--85%, blue-yellow is 65-70%, color blue with white light is only 50--60%, yellowish and white is less than 50%. The commonly mentioned seven green, eight yellow, nine red can be used as a reference.
Second, burn the jewelry and observe the color change after cooling. If it is pure gold, the surface is still golden yellow after burning. If the color is black, it is not pure gold. However, be careful when observing, do not burn the jewelry.
Third, listen to the sound. Drop the pure gold jewelry on the ground and it will make a loud noise. The fake or poorly colored gold falls on the ground, and it will make a sound of Dangdang.
Fourth, gently bite with your teeth. In gold jewelry, pure gold jewelry texture is soft, teeth bite printed, easy to bend, golden color, pure, soft, heavy hand, heavy feeling, the color is yellow with white, white gradually increasing . K gold jewelry is not as heavy as pure gold jewelry. The gold-plated jewellery is plated with gold on the surface of other metal jewellery. The color is similar to that of real gold jewellery. It is golden and bright, and it is difficult to identify when it is new. However, the gold-plated jewelry feels lighter, the texture is harder, the teeth are bitten and unprinted, and it is easy to fade after a long time. Some gold-plated jewellery that is not well-plated, the color is not red or white, or hair.
Finally, whether it is gold-plated jewelry, gold-plated jewelry, or copper jewelry, gold jewelry, generally do not have a gold jewelry-like seal. Or the printed label is different from gold jewelry. If any jewelry is engraved with the English letter “GKâ€, it means “gold platingâ€. Or the printed signature is ambiguous and skewed. Consumers should identify the true and false gold by identifying whether there is a seal on the jewellery, whether the seal meets the above requirements, and whether the seal is clear.
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