There are many ways to identify gold jewelry. The Chinese folk summarizes a set of simple methods. The formula is: seeing color, weight, listening rhyme, folding hardness, stone grinding, contrasting cards, use of acid dots, and coloring. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents. . Seeing the color and color of the color according to the different gloss and color of the gold, you can generally distinguish the pure gold, K gold, real gold and 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". . The density of density 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 hardness, and can be compressed 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 points to grind the golden trail of identified jewelry and cards on the test stone. Try the nitric acid on the golden road with a glass stick. Change. 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.
Pay content for time limit to check for freenThe answer to the appraisal cost is divided into no loss and damage. Generally, no loss is at a weight of 0.3-0.5 yuan/g; The result of non -destructive results is about the content, and the loss is very accurate.nAsk the 5G process, is the gold hard gold?nAnswer the right dearnQuestionnnIs this hard gold?nThe range of 5G involved is too widenQuestion he wrote a full gold above, but when he bought it, it was a price?nIsn't there a little bit of answers?nQuestions foldednAnswer your dear who won't be fakenI want to identify whether it is hard gold or foot gold?nThe answer to the appraisal cost is divided into no loss and damage. Generally, no loss is at a weight of 0.3-0.5 yuan/g; The result of non -destructive results is about the content, and the loss is very accurate.nMore 11nBleak
1. Visual inspectionn1. Check the official sign 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.n2. The ancient gold jewelry will not have obvious official purity logos.n3. Of course, the counterfeit gold jewelry will also have an official sign, so further inspections need to be performed.n4. 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.n2. bromochemical testn1. Put the golden products in the alcohol solution for a small meeting.n2. Soak the sperm solution of a filter paper.n3. At this time, the filter paper becomes gray -purple.n4. Drop 4 drops of bromo -A reagent to the filter paper. If the filter paper becomes white, then this gold product is real gold.nAll test time takes 20 minutes.nThird, magnet testnThis is a simple test, but it is not a sufficient proof and proves whether it is real gold. You can find a powerful magnet for testing.nGold is not a magnetic metal. If your product is attracted by magnets, it is enough to prove that this product is not gold. But you can't prove that it is gold because your product does not respond to magnets, because there are many non -magnetic metals.nFourth, the density test is only a very small metal density exceeding gold. The density of pure 24k gold is about 19.3 grams/ml, which is much higher than other metals. The density test method is enough to prove that your product is gold. The higher the density, the higher the purity of gold. Make sure your product has no additional gem.n1. If you do not have this equipment in this area, jewelry shops can usually do density testing for you.n2. You can put your golden products into the container full of water, and then test the volume of overflowing water, and then except for the weight of the product you call, that is, the density of your golden product. Keep in mind that different gold purity has different grams/ml ratio: 14k- 12.9 ~ 14.6 grams/ml 18k gold-15.2 to 15.9 grams/ml 18k platinum-14.7 ~ 16.9 grams/ml 22k-17.7%to 17.8 grams to 17.8 grams /Ml.nFive, bite testnEveryone has watched the movie, and the mininger bite gold to test it. I also saw that when the Olympic athletes won the gold medal, they would bite their "gold" medal. How simple this test is.n1. Bite gently.n2. Check your bite marks, the deeper the bite marks, the higher the purity of the gold.nIn fact, this is a not recommended test, which will damage your teeth. What's more, the lead will be given to the gold, and the lead is softer.n6. Ceramic scratch test methodn1. Use unlawish ceramics. If you don't have this, you can buy it from a ceramic shop.n2. Use ceramic to draw your golden products. If it is a black scratch, it means that your product is not gold. If it is a golden scratch, it proves that your product is gold.
There are many ways to identify gold jewelry. The Chinese folk summarizes a set of simple methods. The formula is: seeing color, weight, listening rhyme, folding hardness, stone grinding, contrasting cards, use of acid dots, and coloring. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents.
. Seeing the color and color of the color according to the different gloss and color of the gold, you can generally distinguish the pure gold, K gold, real gold and 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".
. The density of density 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 hardness, and can be compressed 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 points to grind the golden trail of identified jewelry and cards on the test stone. Try the nitric acid on the golden road with a glass stick. Change. 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.
Pay content for time limit to check for freenThe answer to the appraisal cost is divided into no loss and damage. Generally, no loss is at a weight of 0.3-0.5 yuan/g; The result of non -destructive results is about the content, and the loss is very accurate.nAsk the 5G process, is the gold hard gold?nAnswer the right dearnQuestionnnIs this hard gold?nThe range of 5G involved is too widenQuestion he wrote a full gold above, but when he bought it, it was a price?nIsn't there a little bit of answers?nQuestions foldednAnswer your dear who won't be fakenI want to identify whether it is hard gold or foot gold?nThe answer to the appraisal cost is divided into no loss and damage. Generally, no loss is at a weight of 0.3-0.5 yuan/g; The result of non -destructive results is about the content, and the loss is very accurate.nMore 11nBleak
1. Visual inspectionn1. Check the official sign 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.n2. The ancient gold jewelry will not have obvious official purity logos.n3. Of course, the counterfeit gold jewelry will also have an official sign, so further inspections need to be performed.n4. 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.n2. bromochemical testn1. Put the golden products in the alcohol solution for a small meeting.n2. Soak the sperm solution of a filter paper.n3. At this time, the filter paper becomes gray -purple.n4. Drop 4 drops of bromo -A reagent to the filter paper. If the filter paper becomes white, then this gold product is real gold.nAll test time takes 20 minutes.nThird, magnet testnThis is a simple test, but it is not a sufficient proof and proves whether it is real gold. You can find a powerful magnet for testing.nGold is not a magnetic metal. If your product is attracted by magnets, it is enough to prove that this product is not gold. But you can't prove that it is gold because your product does not respond to magnets, because there are many non -magnetic metals.nFourth, the density test is only a very small metal density exceeding gold. The density of pure 24k gold is about 19.3 grams/ml, which is much higher than other metals. The density test method is enough to prove that your product is gold. The higher the density, the higher the purity of gold. Make sure your product has no additional gem.n1. If you do not have this equipment in this area, jewelry shops can usually do density testing for you.n2. You can put your golden products into the container full of water, and then test the volume of overflowing water, and then except for the weight of the product you call, that is, the density of your golden product. Keep in mind that different gold purity has different grams/ml ratio: 14k- 12.9 ~ 14.6 grams/ml 18k gold-15.2 to 15.9 grams/ml 18k platinum-14.7 ~ 16.9 grams/ml 22k-17.7%to 17.8 grams to 17.8 grams /Ml.nFive, bite testnEveryone has watched the movie, and the mininger bite gold to test it. I also saw that when the Olympic athletes won the gold medal, they would bite their "gold" medal. How simple this test is.n1. Bite gently.n2. Check your bite marks, the deeper the bite marks, the higher the purity of the gold.nIn fact, this is a not recommended test, which will damage your teeth. What's more, the lead will be given to the gold, and the lead is softer.n6. Ceramic scratch test methodn1. Use unlawish ceramics. If you don't have this, you can buy it from a ceramic shop.n2. Use ceramic to draw your golden products. If it is a black scratch, it means that your product is not gold. If it is a golden scratch, it proves that your product is gold.