5 thoughts on “How to distinguish the authenticity of gold?”
Chad
Hello, in the gold jewelry, the pure gold jewelry texture is soft, the teeth are bite, and it is easy to bend. The color is golden, pure, soft, heavy, and feels heavy. K -gold's head jewelry texture is slightly harder, the teeth bite the use of mintes, the color is yellow in yellow, and the number of K is reduced, the white increases, and the yellow is shallow. The feel of K gold jewelry is not as heavy as pure gold jewelry. In addition, both pure gold and K gold jewelry have a printing sign. Printing on gold jewelry is used "gold" and "KG" English letters represent the texture. When indicating the gold content, the word "99" or "24K" indicates that it is pure gold jewelry. The K gold jewelry is marked with the corresponding K number, such as the K gold jewelry marked "18K". %. In addition, the jewelry also marks the printing of the origin of different manufacturers. Really gold jewelry, printing standards, completeness, and clear, is an important identification of judgment. The gold jewelry has many appraisal methods. The Chinese folk summarizes a set of simple methods. The formula is: look at color, 掂 weight, listening rhyme, folding hardness, stone grinding, contrast cards, acid dots, and color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents. . Seeing color Ben according to the different gloss and color of gold, you can generally distinguish pure gold, K gold, real gold, fake gold. That is, gold is better with red yellow, 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 and the color is about 50 %. Therefore, there is a formula for "seven greens, eight yellow, nine five red, and yellow leucorrhea ash. For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color". . View density The density of gold is 19.32 grams / cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry). . Folding hardness Gold has the characteristics of ductility and small hardness, which can be pressed into thin pieces of 12.7 microns. When the color is high, marks can be left with large head needles or nails. More than 97 % of gold jewelry, after twisting two or three times, wrinkles appear at the bend, also called fish scales; about 95 % gold jewelry, feel hard when bending, the fish scales are not obvious; The jewelry is very hard when the bending is bent, without fish scales; gold jewelry containing more impurities, bend twice or three times to break; if it is made for raw gold, the bend is broken. When using this method, the width and thickness of the jewelry should be considered. The thick and width should be hardened, and the thin and narrow ones are softer. . Listening to the rhyme, watching elasticity When the high -quality gold jewelry is hit or throwing it hard, it emits a dull sound of "hits, clicks", and has no rhyme and elasticity. K gold has sound rhyme, sound, elasticity, the greater the elasticity, the more the rhyme, the more old, the worse the color. 5. Use the test goldstone to identify the color The use of the gold -pairing card (the gold medal identified in color) and the subject's first jewelry on the test gold stone to make the color of the gold jewelry. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps. . Use acid dot The golden roads that have been identified and paired on the testing stone, respectively, and test nitric acid on the golden road with a glass stick. , So the color is unchanged. If it is not gold or non -pure gold, the Golden Road disappears or changes. The law of changes is "three fast, three slows", that is, the low color disappears quickly, and the high color disappears slowly; Depending on the disappearance of its golden road , compare cards can determine the color of gold jewelry. Wang this answer can help you, I wish you smooth!
The fastest way to identify is to burn with fire (preferably the tool commonly used by Master Golden Master-the musket), the result can be seen in 1--- 2 seconds. Those who become black are definitely fake gold. In gold jewelry, pure gold jewelry texture is soft, teeth are bite, and they are easy to bend. Essence K -gold's head jewelry texture is slightly harder, the teeth bite the use of mintes, the color is yellow in yellow, and the number of K is reduced, the white increases, and the yellow is shallow. The feel of K gold jewelry is not as heavy as pure gold jewelry. In addition, both pure gold and K gold jewelry have a printing sign. Printing on gold jewelry is useful "gold" and "KG" English letters. When indicating the gold content, the word "99" or "24K" indicates that it is pure gold jewelry. The K gold jewelry is marked with the corresponding K number, such as the "18K" K gold jewelry, and its gold content is 75 %. In addition, the jewelry also marks the printing of the origin of different manufacturers. Really gold jewelry, printing standards, completeness, and clear, is an important identification of judgment. The types of jewelry that is easy to confuse with gold jewelry, some are gold -plated jewelry, some are gold jewelry, some are copper jewelry, and some are copper alloy jewelry. The following briefly explain: Gold -plated jewelry is plated on the surface of other metal jewelry on the surface of the metal jewelry. The color is similar to the real gold jewelry. The golden light is bright, and it is difficult to confirm the new time. However, the gold -plated jewelry feels lightly, the texture is hard, the teeth are bitter, and it is easy to fade with a long time. Some gold -plated gold -plated jewelry, the color is either red or white, or flowers. This gold jewelry refers to 24K or 22K gold foil on other metal surfaces, such as the KD number of K gold foil is too low, and its softness is poor. The appearance of the golden jewelry is similar to the real gold jewelry. The golden light is sparkling and it is not easy to fade, making it difficult to argue. However, if you carefully observe the depression, angle, back, etc. of the jewelry, you can find that the gold foil is uneven and there is a phenomenon of tilting edges. If there are broken joints on the jewelry, the cross section of the metal material can be seen from the outside. In addition, the feel of the gold jewelry is also lighter, the texture is harder than the pure gold jewelry, the teeth are bitter, and it is not easy to bend. The copper jewelry color is yellow with red, fake, darker luster, soft texture, and light weight. Copper alloy jewelry (copper tin alloy), white color, hard and light quality, long -term coloring, will make the skin darker. Whether it is gold -plated jewelry, gold jewelry, or copper jewelry, and Asian gold jewelry, it is generally not printed with gold jewelry. Or it is different from gold jewelry. If some jewelry is engraved with English letters "GK", it means "gold -plated". Or the signature traces are blurred and crooked. Consumers should identify whether there are printing, printing whether the printing is in compliance with the above provisions, and whether the printing is clear, etc. to determine the authenticity of gold jewelry.
Pay content for time limit to check for freenThe answer will be answered immediately.nLooking at the gold color, the higher the purity of the gold jewelry, the deeper the color; 2. Look at the gold weight, the proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. Low hardness, shallow marks with nails, teeth bite can leave tooth marks, golden island, high -colored gold jewelry is lower than the soft color, the more copper, the harder, the more the bending method can test the hardness. Pure gold can also be tested. Soft, easy to bend, the lower the purity, the less likely to bend. The gold content is not less than 999.nFirst, when you can bite your teeth, when you watch TV, you must have seen such a lens. It is to bite the authenticity of gold with your teeth, because the texture of gold is relatively soft, and the tooth print will appear with the teeth. Tooth printing is definitely a fake gold. Second, use fire to say that "real gold is not afraid of fire", that is to say, really gold is not afraid of high temperature. The melting point of gold is more than 1,000 degrees. You can use fire to burn gold. If the color change or the melting phenomenon is definitely a fake gold. Third, when listening to the sound, when the gold is tapped, the gold will really make a sound of "hits, click", and the fake golden sound will be more crispy, generally the sound of "Dangdang". Fourth, ceramic scratch test method uses unlawish ceramics. If you use ceramics to draw gold products, if it is a black scratch, it means that the product is not gold, and if it is a golden scratch, it proves that the product is gold. Fifth, magnet testing is a simple test, but it is not a sufficient proof to prove whether it is real gold. You can find a powerful magnet for testing. Gold is not a magnetic metal. If the product is attracted by magnets, it is enough to prove that this product is not gold. However, it cannot prove that it is gold because the product does not respond to magnets, because there are many non -magnetic metals.nI hope my answer can help you and wish you a happy life.nMore 2nBleak
For individual consumers, the commonly used simple and can be used to identify 1. Looking at the mark. Now the gold jewelry produced by manufacturers in my country is made from international standards. How much gold is contained in metal products. Foot gold is 24K, and the gold content is 99.6 %; 22K gold content is 91.3 %; the gold content of 20K is 83.3 %; the gold content of 18K is 74.7 %; the gold content of 14K is 58.5 %; %; 8K gold content is 33.3 %; the gold content of 1K is 4.166 %. According to the words of 24K or 18K on the mark, you can know how the jewelry is in color, but the mark of K gold cannot be used as below 10K as regulations. (2) See color: The higher the purity of gold jewelry, the deeper the color. As people often say "seven greens, eight yellows, nine purple and ten red", that is, if the gold decoration is blue yellow, the gold content can reach 70 %; the yellow content of yellow can reach 80-90 %; if it is red yellow, the gold content can reach more than 95. Of course, it is not enough to distinguish the color and true and false of gold jewelry by color. (3) Type weight: The proportion of gold is 19.3, which is higher than other metals. The same volume of gold is 1.8 times the weight of the silver and 2.2 times the copper. Therefore, the real gold bearing should feel heavy in hand, and the fake gold feels lighter (4) Listening to the sound: throw the gold jewelry to the desktop, or on the hard ground, the lower the gold content, the greater the elasticity, the jump jump, the jump The higher, the crisp sound, and there are more than the sound; the higher the gold content, the smaller the elasticity, the lower the jump, the low sound, heavy, and no sound. (5) Testing hardness: The higher the gold content of the jewelry, the softer the more soft, and it is easy to bend with your hands, good toughness, and not easy to break. You will leave clear scratches with hard things; the lower the gold content, the harder it will be. It is necessary to use a large strength to bend, and it is easy to break. When the hard things are engraved, the scratches are not obvious. (6) Burning of muskets: Boil the sample with high temperature muskets, observe the color change after cooling, and the pure golden color does not change after cooling. The degree of darker is not pure gold. Generally, the lower the color, the stronger the color. If it turns dark, it means that it is fake gold jewelry. Most packets of gold may cause expansion and cracking while burning high temperatures. (7) Goldstone: The golden texture is soft, and it is easy to engrave strip marks. The darker the color of the golden stone, the smoother, the flat, the more clear the marks engraved. The principle of identifying the golden color of the goldstone is judged according to the identification of the strip marks and color. Color identification: First of all, all kinds of golden gold draws a line on the testing stone, and the gold to be identified also draws a line on it to compare gold. True and false identification: Draw a line on the test gold stones to be tested, and then drip some nitric acid on the lines you draw. Because many golds on the market are mixed with other rare metals, which causes the gold to become yellow. Nitric acid can melt other metals without reacting with pure gold. The professional appraisal methods include water gravity (golden K number measurement instrument), X fluorescent spectrometer, fire testing method, weight method, inductive coupling plasma atom of plasma atom transmission method, etc. For more detailed methods, you can search for Baidu Post Bar- "Gold Detection"
1. Observation identification method. Gold is "seven greens, eight yellows, nine purple ten red". It means that the blue gold contains 70%, the yellow contains 80%, the purple is 90%gold, and the red is almost 100%gold. 2. Sound identification method. Let the jewelry fall into the hard place, the sound is dull, and the explanation is good; the sound is crisp and the color difference is different. 3. Bend identification method. Twitte -folding utensils, the real gold is soft, easy to bend and not easy to break. 4. Trail identification method. With a hard needle tip on the surface of the real gold, there are obvious traces, and the false traces are blurred. 5. Demonstration of weight. Gold is the largest proportion of the material, and its proportion is 19:37. Bonard and red copper of the same weight are much larger than the same weight gold and red gold. You can know. 6. Fire burning identification method. True gold jewelry can not change color with fire, but it is not resistant to fake. After burning, it will turn dark brown, and it will lose light. I wish you good luck, I wish you a fortune!
Hello, in the gold jewelry, the pure gold jewelry texture is soft, the teeth are bite, and it is easy to bend. The color is golden, pure, soft, heavy, and feels heavy. K -gold's head jewelry texture is slightly harder, the teeth bite the use of mintes, the color is yellow in yellow, and the number of K is reduced, the white increases, and the yellow is shallow. The feel of K gold jewelry is not as heavy as pure gold jewelry. In addition, both pure gold and K gold jewelry have a printing sign. Printing on gold jewelry is used "gold" and "KG" English letters represent the texture. When indicating the gold content, the word "99" or "24K" indicates that it is pure gold jewelry. The K gold jewelry is marked with the corresponding K number, such as the K gold jewelry marked "18K". %. In addition, the jewelry also marks the printing of the origin of different manufacturers. Really gold jewelry, printing standards, completeness, and clear, is an important identification of judgment.
The gold jewelry has many appraisal methods. The Chinese folk summarizes a set of simple methods. The formula is: look at color, 掂 weight, listening rhyme, folding hardness, stone grinding, contrast cards, acid dots, and color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents.
. Seeing color
Ben according to the different gloss and color of gold, you can generally distinguish pure gold, K gold, real gold, fake gold. That is, gold is better with red yellow, 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 and the color is about 50 %. Therefore, there is a formula for "seven greens, eight yellow, nine five red, and yellow leucorrhea ash. For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color".
. View density
The density of gold is 19.32 grams / cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter). Seeking the density of the gold jewelry measured, the density is about 19.32 grams / cubic centimeter, it is pure gold or relatively pure gold, otherwise it is a non -pure gold or color difference gold (this method has no destructiveness to the jewelry).
. Folding hardness
Gold has the characteristics of ductility and small hardness, which can be pressed into thin pieces of 12.7 microns. When the color is high, marks can be left with large head needles or nails. More than 97 % of gold jewelry, after twisting two or three times, wrinkles appear at the bend, also called fish scales; about 95 % gold jewelry, feel hard when bending, the fish scales are not obvious; The jewelry is very hard when the bending is bent, without fish scales; gold jewelry containing more impurities, bend twice or three times to break; if it is made for raw gold, the bend is broken. When using this method, the width and thickness of the jewelry should be considered. The thick and width should be hardened, and the thin and narrow ones are softer.
. Listening to the rhyme, watching elasticity
When the high -quality gold jewelry is hit or throwing it hard, it emits a dull sound of "hits, clicks", and has no rhyme and elasticity. K gold has sound rhyme, sound, elasticity, the greater the elasticity, the more the rhyme, the more old, the worse the color.
5. Use the test goldstone to identify the color
The use of the gold -pairing card (the gold medal identified in color) and the subject's first jewelry on the test gold stone to make the color of the gold jewelry. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps.
. Use acid dot
The golden roads that have been identified and paired on the testing stone, respectively, and test nitric acid on the golden road with a glass stick. , So the color is unchanged. If it is not gold or non -pure gold, the Golden Road disappears or changes. The law of changes is "three fast, three slows", that is, the low color disappears quickly, and the high color disappears slowly; Depending on the disappearance of its golden road
, compare cards can determine the color of gold jewelry.
Wang this answer can help you, I wish you smooth!
The fastest way to identify is to burn with fire (preferably the tool commonly used by Master Golden Master-the musket), the result can be seen in 1--- 2 seconds. Those who become black are definitely fake gold.
In gold jewelry, pure gold jewelry texture is soft, teeth are bite, and they are easy to bend. Essence K -gold's head jewelry texture is slightly harder, the teeth bite the use of mintes, the color is yellow in yellow, and the number of K is reduced, the white increases, and the yellow is shallow. The feel of K gold jewelry is not as heavy as pure gold jewelry. In addition, both pure gold and K gold jewelry have a printing sign. Printing on gold jewelry is useful "gold" and "KG" English letters. When indicating the gold content, the word "99" or "24K" indicates that it is pure gold jewelry. The K gold jewelry is marked with the corresponding K number, such as the "18K" K gold jewelry, and its gold content is 75 %. In addition, the jewelry also marks the printing of the origin of different manufacturers. Really gold jewelry, printing standards, completeness, and clear, is an important identification of judgment.
The types of jewelry that is easy to confuse with gold jewelry, some are gold -plated jewelry, some are gold jewelry, some are copper jewelry, and some are copper alloy jewelry. The following briefly explain: Gold -plated jewelry is plated on the surface of other metal jewelry on the surface of the metal jewelry. The color is similar to the real gold jewelry. The golden light is bright, and it is difficult to confirm the new time. However, the gold -plated jewelry feels lightly, the texture is hard, the teeth are bitter, and it is easy to fade with a long time. Some gold -plated gold -plated jewelry, the color is either red or white, or flowers.
This gold jewelry refers to 24K or 22K gold foil on other metal surfaces, such as the KD number of K gold foil is too low, and its softness is poor. The appearance of the golden jewelry is similar to the real gold jewelry. The golden light is sparkling and it is not easy to fade, making it difficult to argue. However, if you carefully observe the depression, angle, back, etc. of the jewelry, you can find that the gold foil is uneven and there is a phenomenon of tilting edges. If there are broken joints on the jewelry, the cross section of the metal material can be seen from the outside. In addition, the feel of the gold jewelry is also lighter, the texture is harder than the pure gold jewelry, the teeth are bitter, and it is not easy to bend.
The copper jewelry color is yellow with red, fake, darker luster, soft texture, and light weight. Copper alloy jewelry (copper tin alloy), white color, hard and light quality, long -term coloring, will make the skin darker.
Whether it is gold -plated jewelry, gold jewelry, or copper jewelry, and Asian gold jewelry, it is generally not printed with gold jewelry. Or it is different from gold jewelry. If some jewelry is engraved with English letters "GK", it means "gold -plated". Or the signature traces are blurred and crooked. Consumers should identify whether there are printing, printing whether the printing is in compliance with the above provisions, and whether the printing is clear, etc. to determine the authenticity of gold jewelry.
Pay content for time limit to check for freenThe answer will be answered immediately.nLooking at the gold color, the higher the purity of the gold jewelry, the deeper the color; 2. Look at the gold weight, the proportion of gold is 19.32, which is more important than metal such as silver, copper, lead, zinc, aluminum. Low hardness, shallow marks with nails, teeth bite can leave tooth marks, golden island, high -colored gold jewelry is lower than the soft color, the more copper, the harder, the more the bending method can test the hardness. Pure gold can also be tested. Soft, easy to bend, the lower the purity, the less likely to bend. The gold content is not less than 999.nFirst, when you can bite your teeth, when you watch TV, you must have seen such a lens. It is to bite the authenticity of gold with your teeth, because the texture of gold is relatively soft, and the tooth print will appear with the teeth. Tooth printing is definitely a fake gold. Second, use fire to say that "real gold is not afraid of fire", that is to say, really gold is not afraid of high temperature. The melting point of gold is more than 1,000 degrees. You can use fire to burn gold. If the color change or the melting phenomenon is definitely a fake gold. Third, when listening to the sound, when the gold is tapped, the gold will really make a sound of "hits, click", and the fake golden sound will be more crispy, generally the sound of "Dangdang". Fourth, ceramic scratch test method uses unlawish ceramics. If you use ceramics to draw gold products, if it is a black scratch, it means that the product is not gold, and if it is a golden scratch, it proves that the product is gold. Fifth, magnet testing is a simple test, but it is not a sufficient proof to prove whether it is real gold. You can find a powerful magnet for testing. Gold is not a magnetic metal. If the product is attracted by magnets, it is enough to prove that this product is not gold. However, it cannot prove that it is gold because the product does not respond to magnets, because there are many non -magnetic metals.nI hope my answer can help you and wish you a happy life.nMore 2nBleak
For individual consumers, the commonly used simple and can be used to identify
1. Looking at the mark. Now the gold jewelry produced by manufacturers in my country is made from international standards. How much gold is contained in metal products. Foot gold is 24K, and the gold content is 99.6 %; 22K gold content is 91.3 %; the gold content of 20K is 83.3 %; the gold content of 18K is 74.7 %; the gold content of 14K is 58.5 %; %; 8K gold content is 33.3 %; the gold content of 1K is 4.166 %. According to the words of 24K or 18K on the mark, you can know how the jewelry is in color, but the mark of K gold cannot be used as below 10K as regulations.
(2) See color: The higher the purity of gold jewelry, the deeper the color. As people often say "seven greens, eight yellows, nine purple and ten red", that is, if the gold decoration is blue yellow, the gold content can reach 70 %; the yellow content of yellow can reach 80-90 %; if it is red yellow, the gold content can reach more than 95. Of course, it is not enough to distinguish the color and true and false of gold jewelry by color.
(3) Type weight: The proportion of gold is 19.3, which is higher than other metals. The same volume of gold is 1.8 times the weight of the silver and 2.2 times the copper. Therefore, the real gold bearing should feel heavy in hand, and the fake gold feels lighter
(4) Listening to the sound: throw the gold jewelry to the desktop, or on the hard ground, the lower the gold content, the greater the elasticity, the jump jump, the jump The higher, the crisp sound, and there are more than the sound; the higher the gold content, the smaller the elasticity, the lower the jump, the low sound, heavy, and no sound.
(5) Testing hardness: The higher the gold content of the jewelry, the softer the more soft, and it is easy to bend with your hands, good toughness, and not easy to break. You will leave clear scratches with hard things; the lower the gold content, the harder it will be. It is necessary to use a large strength to bend, and it is easy to break. When the hard things are engraved, the scratches are not obvious.
(6) Burning of muskets: Boil the sample with high temperature muskets, observe the color change after cooling, and the pure golden color does not change after cooling. The degree of darker is not pure gold. Generally, the lower the color, the stronger the color. If it turns dark, it means that it is fake gold jewelry. Most packets of gold may cause expansion and cracking while burning high temperatures.
(7) Goldstone: The golden texture is soft, and it is easy to engrave strip marks. The darker the color of the golden stone, the smoother, the flat, the more clear the marks engraved. The principle of identifying the golden color of the goldstone is judged according to the identification of the strip marks and color. Color identification: First of all, all kinds of golden gold draws a line on the testing stone, and the gold to be identified also draws a line on it to compare gold. True and false identification: Draw a line on the test gold stones to be tested, and then drip some nitric acid on the lines you draw. Because many golds on the market are mixed with other rare metals, which causes the gold to become yellow. Nitric acid can melt other metals without reacting with pure gold.
The professional appraisal methods include water gravity (golden K number measurement instrument), X fluorescent spectrometer, fire testing method, weight method, inductive coupling plasma atom of plasma atom transmission method, etc. For more detailed methods, you can search for Baidu Post Bar- "Gold Detection"
1. Observation identification method. Gold is "seven greens, eight yellows, nine purple ten red". It means that the blue gold contains 70%, the yellow contains 80%, the purple is 90%gold, and the red is almost 100%gold.
2. Sound identification method. Let the jewelry fall into the hard place, the sound is dull, and the explanation is good; the sound is crisp and the color difference is different.
3. Bend identification method. Twitte -folding utensils, the real gold is soft, easy to bend and not easy to break.
4. Trail identification method. With a hard needle tip on the surface of the real gold, there are obvious traces, and the false traces are blurred.
5. Demonstration of weight. Gold is the largest proportion of the material, and its proportion is 19:37. Bonard and red copper of the same weight are much larger than the same weight gold and red gold. You can know.
6. Fire burning identification method. True gold jewelry can not change color with fire, but it is not resistant to fake. After burning, it will turn dark brown, and it will lose light.
I wish you good luck, I wish you a fortune!