1 thought on “wholesale formal jewelry Is there a fake gold in Golden Store?”
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jewelry guess wholesale The gold shop has a fake. It depends on the reputation of the store. There is no 100 %. It is a certain content. The gold jewelry is easy to participate in fakes, so it is best to choose a well -known brand because it is difficult for us to identify purity. Generally speaking, big brands, large shops can meet the requirements. Specifically: The official gold shops will not sell fake gold. The national standard stipulates that in the precious metal jewelry, there must be related words. In the national standard, the purity and material marks of precious metals are expressed. For gold jewelry, the application of thousands of points is represented, or the K number is represented, and it is used in conjunction with alloy, AU, or G. , Or directly call it foot gold. 18K gold can indicate Gold 750, AU750, G750, AU18K, G18K, etc. The most direct way is to observe the print on the gold jewelry. The judgment of gold purity is the most direct and most effective way to test the money, but this method to identify the purity of the gold is a loss of identification. Only when the gold is recycled. "Gold is not afraid of fire," mainly because when the purity of the gold reaches a certain degree, the color of the gold will not change when burning with fire. But 18K gold may appear black when burning with fire. So it is not recommended to use it. How to distinguish the authenticity of gold: 1. The logo The jewelry mark should contain the manufacturer code and the name and content of precious metal materials. 2. The appearance quality is mainly the inspection of specific process quality such as the overall shape of the jewelry and the quality of processing. 3. Jewelry weight The gold jewelry is calculated based on weight and processing costs. The weight of the jewelry is one of the important indicators. Essence 4. Gold content The gold content in the jewelry is an important indicator of its quality. There are many types of gold content testing methods, which can be divided into chemical analysis methods and instrument analysis methods. Depending on whether the jewelry is damaged during the testing process, it can be divided into non -destructive detection method and damage testing method. The daily inspection of the jewelry quality supervision department is generally based on non -destructive testing method. Utilize large instrument analysis. Market supervision random inspections are mainly due to damage testing. The fire test method is currently the national testing method that measures the gold content in jewelry in my country. 5. Look at the color Ben according to the different gloss and color of the gold, you can generally distinguish between 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". 6. Look at 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). 7. 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. 8. Listening to the rhyme, watching elasticity When the high -quality gold jewelry is hit or throwing it hard, the dull sound of "hits, clicks" is emitted, and there is no rhyme, no elasticity, k, K, K, K, K. Jin has the rhyme, sound, and 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.
10. Use acid dot This to grind the identified jewelry and cards on the test stone, and use a glass stick to test the nitric acid on the golden road. Reacting with acid, 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.
jewelry guess wholesale The gold shop has a fake. It depends on the reputation of the store. There is no 100 %. It is a certain content. The gold jewelry is easy to participate in fakes, so it is best to choose a well -known brand because it is difficult for us to identify purity. Generally speaking, big brands, large shops can meet the requirements.
Specifically:
The official gold shops will not sell fake gold. The national standard stipulates that in the precious metal jewelry, there must be related words. In the national standard, the purity and material marks of precious metals are expressed. For gold jewelry, the application of thousands of points is represented, or the K number is represented, and it is used in conjunction with alloy, AU, or G. , Or directly call it foot gold. 18K gold can indicate Gold 750, AU750, G750, AU18K, G18K, etc. The most direct way is to observe the print on the gold jewelry.
The judgment of gold purity is the most direct and most effective way to test the money, but this method to identify the purity of the gold is a loss of identification. Only when the gold is recycled. "Gold is not afraid of fire," mainly because when the purity of the gold reaches a certain degree, the color of the gold will not change when burning with fire. But 18K gold may appear black when burning with fire. So it is not recommended to use it.
How to distinguish the authenticity of gold:
1. The logo
The jewelry mark should contain the manufacturer code and the name and content of precious metal materials.
2. The appearance quality
is mainly the inspection of specific process quality such as the overall shape of the jewelry and the quality of processing.
3. Jewelry weight
The gold jewelry is calculated based on weight and processing costs. The weight of the jewelry is one of the important indicators. Essence
4. Gold content
The gold content in the jewelry is an important indicator of its quality. There are many types of gold content testing methods, which can be divided into chemical analysis methods and instrument analysis methods. Depending on whether the jewelry is damaged during the testing process, it can be divided into non -destructive detection method and damage testing method. The daily inspection of the jewelry quality supervision department is generally based on non -destructive testing method. Utilize large instrument analysis. Market supervision random inspections are mainly due to damage testing. The fire test method is currently the national testing method that measures the gold content in jewelry in my country.
5. Look at the color
Ben according to the different gloss and color of the gold, you can generally distinguish between 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".
6. Look at 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).
7. 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.
8. Listening to the rhyme, watching elasticity
When the high -quality gold jewelry is hit or throwing it hard, the dull sound of "hits, clicks" is emitted, and there is no rhyme, no elasticity, k, K, K, K, K. Jin has the rhyme, sound, and 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.
10. Use acid dot
This to grind the identified jewelry and cards on the test stone, and use a glass stick to test the nitric acid on the golden road. Reacting with acid, 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.