Visual inspection. Check the purity logo of the gold, which will generally be engraved with a logo of 999 or 990. The ancient gold jewelry will not have obvious official purity logos. Some fake gold jewelry will also have a purity logo. Therefore Is there any obvious discoloration reaction and check the wear area on the gold surface. If the golden color disappears and becomes another color, then this jewelry is likely to be just a gold plating. 2, bromine chemistry test. Put the golden products in the alcohol solution for a while, and soak a piece of filter paper with alcohol solution. If the filter paper becomes white, it means that the gold jewelry is pure gold. The general test time takes 20 minutes. 3, magnet test. Gold does not contain magnetic metals. If the jewelry is attracted by magnets, it is enough to prove that this jewelry is not gold, but it cannot prove that it is gold because the jewelry does not respond to the magnet, because there are many non -magnetic metals. 4, density test. The density of pure 24k gold is about 19.3 grams per milliliter, which is far higher than other metals. The density test method is enough to prove whether the jewelry is gold. The higher the density, the higher the purity of gold. 5, bite test. Gently bite the gold and check the bite marks. The deeper the bite marks, the higher the purity of the gold. The official signs of gold. Generally, 999 or 990, or 10K, 18K, 22K, 24K. It is not considered lower than 10K, because the content of gold is too low. If you observe with a magnifying glass, you will see more carefully.
2, ancient gold jewelry will not have obvious official purity logos.
3, of course, there will also be official signs of counterfeit gold jewelry, so further inspections need to be performed.
4, find obvious discoloration. Check the wear area of the golden surface, which is usually on the edge of the golden products to check the color change there. If the golden color disappears and becomes another color, then this product is just a gold -plated.
First of all, you can distinguish the color of gold. Most of the fake gold on the market will be mixed with 铱 elements, but because the gold and the elements cannot be fused together, everyone can use it. Observing the golden surface of gold, you will see the highlight of white, but no matter what everyone thinks of the color is golden brown. It look at the logo of gold. In China, gold jewelry must be used as a killing record in accordance with national standards. What is the purity of the gold jewelry to indicate the golden jewelry? Therefore, you can see whether the gold jewelry is marked with 24K or a thousand gold marks. If the gold jewelry is not labeled, then everyone must be careful. The gold jewelry is likely to be fake. In addition, if it is marked with 18K, etc., then everyone must know that the jewelry cannot be regarded as pure gold.
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Visual inspection. Check the purity logo of the gold, which will generally be engraved with a logo of 999 or 990. The ancient gold jewelry will not have obvious official purity logos. Some fake gold jewelry will also have a purity logo. Therefore Is there any obvious discoloration reaction and check the wear area on the gold surface. If the golden color disappears and becomes another color, then this jewelry is likely to be just a gold plating.
2, bromine chemistry test. Put the golden products in the alcohol solution for a while, and soak a piece of filter paper with alcohol solution. If the filter paper becomes white, it means that the gold jewelry is pure gold. The general test time takes 20 minutes.
3, magnet test. Gold does not contain magnetic metals. If the jewelry is attracted by magnets, it is enough to prove that this jewelry is not gold, but it cannot prove that it is gold because the jewelry does not respond to the magnet, because there are many non -magnetic metals.
4, density test. The density of pure 24k gold is about 19.3 grams per milliliter, which is far higher than other metals. The density test method is enough to prove whether the jewelry is gold. The higher the density, the higher the purity of gold.
5, bite test. Gently bite the gold and check the bite marks. The deeper the bite marks, the higher the purity of the gold.
The official signs of gold. Generally, 999 or 990, or 10K, 18K, 22K, 24K. It is not considered lower than 10K, because the content of gold is too low. If you observe with a magnifying glass, you will see more carefully.
2, ancient gold jewelry will not have obvious official purity logos.
3, of course, there will also be official signs of counterfeit gold jewelry, so further inspections need to be performed.
4, find obvious discoloration. Check the wear area of the golden surface, which is usually on the edge of the golden products to check the color change there. If the golden color disappears and becomes another color, then this product is just a gold -plated.
First of all, you can distinguish the color of gold. Most of the fake gold on the market will be mixed with 铱 elements, but because the gold and the elements cannot be fused together, everyone can use it. Observing the golden surface of gold, you will see the highlight of white, but no matter what everyone thinks of the color is golden brown.
It look at the logo of gold. In China, gold jewelry must be used as a killing record in accordance with national standards. What is the purity of the gold jewelry to indicate the golden jewelry? Therefore, you can see whether the gold jewelry is marked with 24K or a thousand gold marks. If the gold jewelry is not labeled, then everyone must be careful. The gold jewelry is likely to be fake. In addition, if it is marked with 18K, etc., then everyone must know that the jewelry cannot be regarded as pure gold.
Gold value lies in its purity
n00:00 / 01: 2470% shortcut keys to describe space: Play / pause ESC: Exit full screen ↑: increase volume 10% ↓: decreases by 10% →: Single fast forward 5 seconds studio Here you can drag no longer appear in the player settings to reopen the small window shortcut key description