5 thoughts on “How to identify the authenticity of gold”
Nick
What are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.nWhat are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.
Differential gold requires some experience. Simply introduce some identification methods. But it is best to go to the gold shop!
(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.
(3) Look at the hardness: pure gold is soft and low. It can draw light marks with nails. Teeth bite can leave tooth prints. High -colored gold jewelry is low and soft, with copper with copper, contains copper containing copper, contains copper containing copper The harder, the harder, the bending method can also test the hardness, the pure gold is soft, it is easy to bend, the lower the purity, the less likely to bend.
(4) Listening to the sound: Real gold with a color of more than 99 % throwing it on the hard ground, it 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.
(5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with fire (do not melt the jewelry), and observe the color change after cooling. Dark or different degrees of darkness 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.
(6) Seeing the mark: Domestic gold jewelry is allicized and prepared according to international standards, and the killing records, such as "24K" indicate "foot red" or "foot gold"; The word "18K" is marked, and those who have a lower color are lower than LOK. 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.
The accurate identification of gold jewelry in accurate commonly used common methods.
(1) Testing gold stone method: Select the black test gold stone with delicate texture, use the standard tasting films with different gold content (on the gold medal) on the test gold stone, and then put the gold jewelry sample you want to identify in The scratches on the same goldstone, drip the concentrated nitric acid to remove the impurities, and find the traces left on the test gold stones compared with the traces of the tested slices. The accurate gold content of gold jewelry samples to be determined.
(2) Chemical method: also known as reagent test method. Gold is insoluble in separate nitric acid, sulfuric acid, and hydrochloric acid, and silver and copper ingredients can be dissolved with nitric acid. Take gold decorative sample. Putting nitric acid on a certain part, if gold will not change color, if it is silver products, it will generate silver oxide and turn black; For gold jewelry with a gold content of more than 95 %, test with nitric acid, the surface changes very small.
Pay content for time limit to check for freenAnswer ，️, the first method is bite with teeth. We can often see people bite gold on the screen to test the authenticity. In theory, the color of the gully in the bite has not changed. The deeper the bite marks, the higher the purity of gold. But we do not recommend this method because this may hurt the teeth. In addition, because lead is softer than gold, bite marks will be left on the gold -plated lead.nThe second method is the magnetic detection method. Gold is a magnetic metal, so it can be attracted by magnets. This method is simple and easy. Use magnets to suck the golden device. If the magnet can attract gold, it is fake. However, it cannot be attracted by the magnet alone that it cannot prove that this golden device is true, because it may also be made from other non -magnetic metals.nThe third method is a very professional test method. Generally, only jewelry dealers or craftsmen will adopt, that is, nitric acid testing method. Put the gold in a small stainless steel container, drop a drop of nitric acid on the goldware, and observe the reaction. If the acid is green, then this golden device is either made of ordinary metal or gold plated. Then it is gold -plated copper. If there is no response, then this golden device is true.nQuestionnnAnswer dear, you show me this, I can’t help you distinguish between true and false with the naked eye nDear, if you can't distinguish between true and false, you can go to the jewelry shop and ask professionals to check you ☺️n5 morenBleak
Method 1: Look at the color This containing seven greens, eight yellow, nine purple, and ten red. That is, the golden 70 % of the gold is blue, the 80 % of the gold is yellow, the gold is 90 % of the yellow, and the 24K gold is red. Natural gold is not easy to oxidize, and the color is bright. In contrast, you can divide the false and false.
Method two: Test hardness The gold jewelry with high color, soft texture, and low -colored gold jewelry is hard. The pure gold is very soft (the hardness of the pure gold is 2.8), the marks can be carved on the golden onto, the nails are basically engraved with gold, and the traces can be bitten on the gold. The gold -plated brass pseudo is very hard, and the teeth can't be bitten at all. Really gold jewelry bending with hands is soft and easy to break. Fake or adulteration is easy to break. Method three: Weight The weight of the gold jewelry is greater than the weight of the general product, and it has a feeling of sinking and thugs in the hands. For example, the size of the gold 1 cubic centimeter is 19.37 grams and the weight of the copper 1 cubic centimeter is 8.8 grams (the brass is only 8.5 grams). It can be seen that the weight of the gold and copper is more than doubled, and the comparison weight is easy to identify.
Methods Four: acid test This metal of a ship encounters strong acids such as sulfuric acid, hydrochloric acid, nitric acid. Method five: Use fire . As the saying goes; "real gold is not afraid of fire burning." As long as the jewelry is placed on the tiles of the stove surface, it is red after it is cooled. If the surface is still golden yellow, it is real gold. Method 6: Listening to the sound This on the floor, the sound of "click" will be made. Gold bomb high. Method Seven: Test the goldstone test Rainstone or silicon rocks. Put it in the goose blood or goose soup to cook, and it becomes a black test gold stone. Put the gold on the top, see the color, traces (flat, obliquely look at light), and sound, you can identify the true and false pensions. For example, there are many gold and silver, and it is green on the testing stone and soft; if there are many copper, it is hard. If there is a gold medal in the standard shape, compare with the traces, it is clear.
00:00 / 00: 5570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease 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
What are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.nWhat are the domestic gold appraisal agencies? General shopping malls and gold shops can identify the authenticity of gold, but they cannot identify the gold content of gold, and these appraisal agencies lack credibility, consumers have doubts about the identification results, so gold shops such as gold shops are not completely recognized by consumers. In fact, there are generally gold jewelry appraisal centers in each region. Especially in the provincial capital cities, there are precious metal appraisal centers, which can identify the authenticity and purity of gold. For specific identification addresses and contact information of each city, you can check or dial 114 on the Internet to understand in detail, or go directly to the gold shop to ask where you can identify gold jewelry. In fact, in addition to learning the authenticity and purity of the professional appraisal agency, you can also directly identify it through other methods, such as: 1. The color appraisal method can distinguish the pure gold, K gold, and real gold according to the different luster and color of the color. , Fake gold. Red yellow gold is better, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray -formed at about 50%. The folks are called "seven greens, eight yellow, nine five red, and yellow leucorrhea ash." If it is a gold jewelry with a long storage time, there is a saying that "copper turns green, silver turns black, and gold will never change color". Therefore, the more positive the golden color, the higher the purity. 2. Listening to the rhyme and elasticity of the sound appraisal method. When a high -quality gold jewelry is knocked down or threw hard to throw it, it will make a bright and low voice of "hits, cotton", and has no rhyme, no elasticity, K gold sound rhyme, sound, elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity, the more elasticity. The more the rhyme, the more the elders, the worse the color. Therefore, the higher the purity of gold, the smaller the elasticity and the lower the sound. 3. You can also use a professional goldstone to identify it, operate in accordance with the specifications, and then use the contrasting color to definitely make the gold jewelry.
Differential gold requires some experience. Simply introduce some identification methods. But it is best to go to the gold shop!
(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.
(3) Look at the hardness: pure gold is soft and low. It can draw light marks with nails. Teeth bite can leave tooth prints. High -colored gold jewelry is low and soft, with copper with copper, contains copper containing copper, contains copper containing copper The harder, the harder, the bending method can also test the hardness, the pure gold is soft, it is easy to bend, the lower the purity, the less likely to bend.
(4) Listening to the sound: Real gold with a color of more than 99 % throwing it on the hard ground, it 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.
(5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with fire (do not melt the jewelry), and observe the color change after cooling. Dark or different degrees of darkness 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.
(6) Seeing the mark: Domestic gold jewelry is allicized and prepared according to international standards, and the killing records, such as "24K" indicate "foot red" or "foot gold"; The word "18K" is marked, and those who have a lower color are lower than LOK. 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.
The accurate identification of gold jewelry in accurate commonly used common methods.
(1) Testing gold stone method: Select the black test gold stone with delicate texture, use the standard tasting films with different gold content (on the gold medal) on the test gold stone, and then put the gold jewelry sample you want to identify in The scratches on the same goldstone, drip the concentrated nitric acid to remove the impurities, and find the traces left on the test gold stones compared with the traces of the tested slices. The accurate gold content of gold jewelry samples to be determined.
(2) Chemical method: also known as reagent test method. Gold is insoluble in separate nitric acid, sulfuric acid, and hydrochloric acid, and silver and copper ingredients can be dissolved with nitric acid. Take gold decorative sample. Putting nitric acid on a certain part, if gold will not change color, if it is silver products, it will generate silver oxide and turn black; For gold jewelry with a gold content of more than 95 %, test with nitric acid, the surface changes very small.
Pay content for time limit to check for freenAnswer ，️, the first method is bite with teeth. We can often see people bite gold on the screen to test the authenticity. In theory, the color of the gully in the bite has not changed. The deeper the bite marks, the higher the purity of gold. But we do not recommend this method because this may hurt the teeth. In addition, because lead is softer than gold, bite marks will be left on the gold -plated lead.nThe second method is the magnetic detection method. Gold is a magnetic metal, so it can be attracted by magnets. This method is simple and easy. Use magnets to suck the golden device. If the magnet can attract gold, it is fake. However, it cannot be attracted by the magnet alone that it cannot prove that this golden device is true, because it may also be made from other non -magnetic metals.nThe third method is a very professional test method. Generally, only jewelry dealers or craftsmen will adopt, that is, nitric acid testing method. Put the gold in a small stainless steel container, drop a drop of nitric acid on the goldware, and observe the reaction. If the acid is green, then this golden device is either made of ordinary metal or gold plated. Then it is gold -plated copper. If there is no response, then this golden device is true.nQuestionnnAnswer dear, you show me this, I can’t help you distinguish between true and false with the naked eye nDear, if you can't distinguish between true and false, you can go to the jewelry shop and ask professionals to check you ☺️n5 morenBleak
Method 1: Look at the color
This containing seven greens, eight yellow, nine purple, and ten red. That is, the golden 70 % of the gold is blue, the 80 % of the gold is yellow, the gold is 90 % of the yellow, and the 24K gold is red. Natural gold is not easy to oxidize, and the color is bright. In contrast, you can divide the false and false.
Method two: Test hardness
The gold jewelry with high color, soft texture, and low -colored gold jewelry is hard. The pure gold is very soft (the hardness of the pure gold is 2.8), the marks can be carved on the golden onto, the nails are basically engraved with gold, and the traces can be bitten on the gold. The gold -plated brass pseudo is very hard, and the teeth can't be bitten at all. Really gold jewelry bending with hands is soft and easy to break. Fake or adulteration is easy to break.
Method three: Weight
The weight of the gold jewelry is greater than the weight of the general product, and it has a feeling of sinking and thugs in the hands. For example, the size of the gold 1 cubic centimeter is 19.37 grams and the weight of the copper 1 cubic centimeter is 8.8 grams (the brass is only 8.5 grams). It can be seen that the weight of the gold and copper is more than doubled, and the comparison weight is easy to identify.
Methods Four: acid test
This metal of a ship encounters strong acids such as sulfuric acid, hydrochloric acid, nitric acid.
Method five: Use fire
. As the saying goes; "real gold is not afraid of fire burning." As long as the jewelry is placed on the tiles of the stove surface, it is red after it is cooled. If the surface is still golden yellow, it is real gold.
Method 6: Listening to the sound
This on the floor, the sound of "click" will be made. Gold bomb high.
Method Seven: Test the goldstone test
Rainstone or silicon rocks. Put it in the goose blood or goose soup to cook, and it becomes a black test gold stone. Put the gold on the top, see the color, traces (flat, obliquely look at light), and sound, you can identify the true and false pensions. For example, there are many gold and silver, and it is green on the testing stone and soft; if there are many copper, it is hard. If there is a gold medal in the standard shape, compare with the traces, it is clear.
00:00 / 00: 5570% shortcut keys to describe space: Play / suspend ESC: exit full screen ↑: increase volume 10% ↓: reduced volume decrease 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