There are many appraisal methods for gold jewelry, including color, weight, weight, listening sound, folding hardness, stone grinding, contrast cards, sour points, and fixed color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents. There are also common methods -burning with fire. —— “Quoting from the Internet” 1. Identifying gold Gold as a collection of valuable investment products, which has a general nature in the world. There are many fakes. If you want to check the authenticity of the environment, you can first check whether the official nature has a specific logo. If it is lower than 10K, it proves that the gold content is too low. It is best to observe with a magnifying glass when checking it to see more detailed. But if the gold jewelry is relatively long, then there will be no official purity logo. Although some counterfeit products have signs, they must be checked from the identification certificate. If there is obvious discoloration or the golden color disappears, this shows that it is just a gold -plated product. . The golden can be identified by chemical testing and magnet testing. You can put gold in a special alcohol solution for a while, and then immerse the filter paper in a golden alcohol solution, and the filter paper will be turned into a paper into a paper. For gray purple, then special reagents are added. If the filter paper becomes white, this means that it is real gold. But if there is no discoloration, it proves that this is a fake. You can also use magnets for testing. If this product is attracted by magnets, it proves that this is a fake, because gold does not contain magnetic. . Through the bite testing of gold In in the film, it is found that some people like to identify golden knowledge and like to bite with their mouths and gently bite gold.
Pay content for time limit to check for freenAnswer (1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50–60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference. (2) Type weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method is not suitable for gold jewelry inlaid.n(3) Look at the hardness: pure gold is soft and low. It can be used to draw light marks with nails. Teeth bite can leave dental marks. High -colored gold jewelry is low in color. It can also test hardness, pure gold is soft, easy to bend, the lower the purity, the less likely to bend.n(4) Listening to the sound: Throwing the real gold with more than 99 % of the color will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of “Dangdang” is emitted, and there are surplus sounds.n(5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with the fire (do not melt the jewelry). After cooling, observe the color change. If the surface is still the original golden color is pure gold; It is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry.n(6)看标记：国产黄金饰品都是按国际标准提纯配制成的，并打上戮记，如“24K”标明“足赤”或“足金”；18K金，标明“18K”字样，成色低Those who are in LOK can not play the K -printed number according to regulations. At present, illegal elements are commonly used to manufacture fake cards and imitation stamps in the society. They use rare gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the real.nGold, gold jewelry has always been one of people’s favorite jewelry and one of the very valuable currency materials.nGold purity refers to the content of gold. Generally, K is used to represent the purity of gold, the highest purity of 24K gold, 18K times, and so on. The name of the gold depends on its purity. Therefore, you can distinguish gold by looking at color, weight, see hardness, listen to sounds, use fire, and see markers and other methods.nIn accordance with the “Regulations and Naming Methods of Jewelry Pureth” (National Standard GB/T11887-2002), the minimum purity of the purity of the foot gold is 990, that is, the purity is not less than 990 ‰; That is, the purity is not less than 999 ‰. In the standards here, the purity range of precious metals in precious metal jewelry does not include welding components, but the finished product content must not be lower than the specified purity range. The regulations on the purity of gold in the national standard refer to the minimum purity value. In most of the domestic market, the purity of most gold and thousands of gold raw materials exceeds the lowest value (the purity of the foot gold reaches 995 ‰, and the purity of thousands of gold reaches 999.5 ‰).nThe name of the gold depends on its purity. For example, the gold with a purity of 99%is called “Foot Gold”, the gold with a purity of 99.9%is called “Thousands of Gold”, and the gold with a purity of 99.99% Gold can call it “100,000 enough gold” or “Gao Chunjin”. There is an idiom called “Gold Wone to the Red and People Without Permanent”. In fact, 100%of pure gold does not exist. The first reason is that in the refinement technology, the other is that the gold jewelry or gold bars will participate in other substances more or less during the processing process.nIndicates that the Kra “Clar” of the Gem is directly related to the gemstone. “Clar” comes from French Carat. In order to distinguish between the two, the weight unit of the gem was “carat”, and the golden position symbol was selected “K”. However, in the weight of the gem, 1 carat = 200 mg; 1k in the purity unit of gold is 1/24 or converted to 4.1666%, which means that the gold content is 1/24 or 4.1666%. 18K gold is said to be the gold content of 18/24, which is 75%, and the remaining 25%are other metals. In gold jewelry, copper, silver, and so on. 24K gold means pure gold. Relatively speaking, Chinese consumers have high requirements for gold jewelry, so in the Chinese market, the more common gold jewelry varieties are 24K and 18K. However, in Europe and the United States, people have greater demand for gold jewelry. We can see many low -purity gold jewelry, such as 12K gold, 14K gold, etc. These purity mean is 50%and 58.33%of the gold content.nMore 8nBleak
There are many appraisal methods for gold jewelry, including color, weight, weight, listening sound, folding hardness, stone grinding, contrast cards, sour points, and fixed color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents. There are also common methods -burning with fire. —— “Quoting from the Internet”
1. Identifying gold
Gold as a collection of valuable investment products, which has a general nature in the world. There are many fakes. If you want to check the authenticity of the environment, you can first check whether the official nature has a specific logo. If it is lower than 10K, it proves that the gold content is too low. It is best to observe with a magnifying glass when checking it to see more detailed. But if the gold jewelry is relatively long, then there will be no official purity logo. Although some counterfeit products have signs, they must be checked from the identification certificate. If there is obvious discoloration or the golden color disappears, this shows that it is just a gold -plated product.
. The golden
can be identified by chemical testing and magnet testing. You can put gold in a special alcohol solution for a while, and then immerse the filter paper in a golden alcohol solution, and the filter paper will be turned into a paper into a paper. For gray purple, then special reagents are added. If the filter paper becomes white, this means that it is real gold. But if there is no discoloration, it proves that this is a fake. You can also use magnets for testing. If this product is attracted by magnets, it proves that this is a fake, because gold does not contain magnetic.
. Through the bite testing of gold
In in the film, it is found that some people like to identify golden knowledge and like to bite with their mouths and gently bite gold.
Just take the fire and keep the color without changing the color
Pay content for time limit to check for freenAnswer (1) See color: the higher the purity of the gold jewelry, the deeper the color. If there is no gold medal, you can determine the general color according to the following color (based on green gold. The so-called green gold contains only silver ingredients in gold); dark red yellow color is more than 95 %, light red yellow 90-95 % The pale yellow is 80-85 %, the cyan is 65-70 %, and the white light is only 50–60 % white light. The slightly yellow and white are less than 50 %. Generally, Qiqing, Eight Huang, and Jiu Chi can be used as a reference. (2) Type weight: The proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. The volume of gold is more than 40 % heavier than the silver, 1.2 times heavier than copper, and 6.1 times heavier than aluminum. The gold jewelry should have a feeling of sinking in the hand, and the fake gold jewelry feels lightly. This method is not suitable for gold jewelry inlaid.n(3) Look at the hardness: pure gold is soft and low. It can be used to draw light marks with nails. Teeth bite can leave dental marks. High -colored gold jewelry is low in color. It can also test hardness, pure gold is soft, easy to bend, the lower the purity, the less likely to bend.n(4) Listening to the sound: Throwing the real gold with more than 99 % of the color will make a tap sound, there is no rhyme or elasticity. The fake or low golden sound is crispy but no dullness. Generally, the sound of “Dangdang” is emitted, and there are surplus sounds.n(5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with the fire (do not melt the jewelry). After cooling, observe the color change. If the surface is still the original golden color is pure gold; It is not pure gold. Generally, the lower the color, the stronger the color, and the darkens are all, indicating that it is a fake gold jewelry.n(6)看标记：国产黄金饰品都是按国际标准提纯配制成的，并打上戮记，如“24K”标明“足赤”或“足金”；18K金，标明“18K”字样，成色低Those who are in LOK can not play the K -printed number according to regulations. At present, illegal elements are commonly used to manufacture fake cards and imitation stamps in the society. They use rare gold, Asian gold, and even brass to impersonate real gold. Therefore, the identification of gold jewelry must be comprehensively determined according to the sample to determine the true and false and the quality of the real.nGold, gold jewelry has always been one of people’s favorite jewelry and one of the very valuable currency materials.nGold purity refers to the content of gold. Generally, K is used to represent the purity of gold, the highest purity of 24K gold, 18K times, and so on. The name of the gold depends on its purity. Therefore, you can distinguish gold by looking at color, weight, see hardness, listen to sounds, use fire, and see markers and other methods.nIn accordance with the “Regulations and Naming Methods of Jewelry Pureth” (National Standard GB/T11887-2002), the minimum purity of the purity of the foot gold is 990, that is, the purity is not less than 990 ‰; That is, the purity is not less than 999 ‰. In the standards here, the purity range of precious metals in precious metal jewelry does not include welding components, but the finished product content must not be lower than the specified purity range. The regulations on the purity of gold in the national standard refer to the minimum purity value. In most of the domestic market, the purity of most gold and thousands of gold raw materials exceeds the lowest value (the purity of the foot gold reaches 995 ‰, and the purity of thousands of gold reaches 999.5 ‰).nThe name of the gold depends on its purity. For example, the gold with a purity of 99%is called “Foot Gold”, the gold with a purity of 99.9%is called “Thousands of Gold”, and the gold with a purity of 99.99% Gold can call it “100,000 enough gold” or “Gao Chunjin”. There is an idiom called “Gold Wone to the Red and People Without Permanent”. In fact, 100%of pure gold does not exist. The first reason is that in the refinement technology, the other is that the gold jewelry or gold bars will participate in other substances more or less during the processing process.nIndicates that the Kra “Clar” of the Gem is directly related to the gemstone. “Clar” comes from French Carat. In order to distinguish between the two, the weight unit of the gem was “carat”, and the golden position symbol was selected “K”. However, in the weight of the gem, 1 carat = 200 mg; 1k in the purity unit of gold is 1/24 or converted to 4.1666%, which means that the gold content is 1/24 or 4.1666%. 18K gold is said to be the gold content of 18/24, which is 75%, and the remaining 25%are other metals. In gold jewelry, copper, silver, and so on. 24K gold means pure gold. Relatively speaking, Chinese consumers have high requirements for gold jewelry, so in the Chinese market, the more common gold jewelry varieties are 24K and 18K. However, in Europe and the United States, people have greater demand for gold jewelry. We can see many low -purity gold jewelry, such as 12K gold, 14K gold, etc. These purity mean is 50%and 58.33%of the gold content.nMore 8nBleak