5 thoughts on “How to distinguish the authenticity of gold jewelry when buying gold jewelry?”
Alton
if we want to buy gold jewelry, we must go to a regular jewelry store to buy it, so as to avoid buying fake gold the purity of gold jewelry cannot be guaranteed in other places. The gold jewelry produced by manufacturers is covered with gold content marks, such as 24K and 14k. If there is no mark, it will usually be false. There are also a few small ways to distinguish the authenticity of gold. Let's take a look
if you want to distinguish whether gold is real or fake, you can look at its color according to the different luster of gold, gold can be roughly divided into pure gold, K-gold, real gold and fake gold. That is to say, gold is best in red yellow, and the fineness is more than 95%; The fineness of positive yellow is about 80%; The fineness of cyan yellow is about 70%; The fineness of yellow with slight gray is about 50%, so there is a pithy formula "seven green, eight yellow, nine five red, yellow and white with gray and half gold"
if you want to distinguish whether gold is true or false, you can also look at its importance, which can also be seen the specific gravity of gold is higher than that of other materials. A small piece of gold jewelry may feel like falling, but copper of the same size will not fall and become lighter. This is because the density of gold is relatively high. After understanding this feature, you can use real gold jewelry to weigh it and find out the feeling. This feeling is obvious. Later, when you identify gold jewelry, you will have a deeper experience
if you want to distinguish whether gold is true or false, you can also look at its hardness, which can also be seen when we watch TV, usually in ancient costume movies and TV dramas, there may be a scenario where some people bite gold with their teeth to distinguish between real and fake. Pure gold has low hardness. If you bite it, it will leave tooth marks. Therefore, when identifying pure gold, you can try its hardness. If the hardness is too high, it cannot be pure gold
I personally think there are several ways to distinguish the authenticity of gold jewelry,
1. Look at the color
according to the different luster and color of gold, we can roughly distinguish pure gold, K gold, real gold and fake gold. The old saying "seven green and eight yellow, nine five red, yellow and white with gray half gold" passed down from pawnshops describes the purity of gold. If the color is green and white, the purity is not high, and if the color is red and yellow, the purity is high
2. Look at the gold with high hardness
it can leave traces when it is scratched with pins or nails. More than 97% of the gold jewelry with good quality will appear wrinkles at the bend after being bent two or three times, also known as fish scale lines; About 95% of the gold jewelry with good quality feels hard when it is bent, and the fish scale pattern is not obvious; Gold jewelry of about 90% quality is very hard when folded, without fish scale lines; Gold jewelry with more impurities will break after bending for two or three times; If it is made of raw gold, it will break when it is bent, and the section will have obvious sand grains
3. Look at the mark
according to the regulations, domestic gold jewelry should be marked with a mark of killing. Marking 24K means that the purity is above 99.6%, and marking 18K means that the purity is above 75%
4. Weight
the specific gravity of gold is 19.3g/cm3, and the fineness is greatly related to the specific gravity. When the specific gravity is close to 19.3, the higher the pure gold content is. Weigh its weight by hand to see whether it is commensurate with the volume. Large and light shapes may be adulterated. But generally, if you weigh it in your hand, you can feel that it is genuine gold jewelry if you have a slight sinking feeling. It can be seen that the gold is small and heavy. We should be alert to bulky and light ornaments and carefully distinguish whether they are fake or semi fake
5. Listen to the sound
when real gold with a fineness of more than 99% is thrown on the hard ground, it will make a popping sound without rhyme or elasticity. The false or low-quality gold sound is crisp without dullness. It usually makes a "Dangdang" sound, and there are aftersounds. It beats violently after landing
6. Scraping porcelain plate method
find an unglazed porcelain plate. If you don't have one, you can go to a home improvement shop and buy any porcelain. Scrape the porcelain plate with gold. If there are black scratches on the porcelain plate, your gold is not real gold. If the scratches are gold, it is real gold. This method can expose the fake gold, but your gold may be scratched
7. Try soft and hard
the higher the fineness of gold jewelry, the softer it is, and the less elastic it is. Real gold will have light marks when it is bitten by teeth or scratched by needles, and there will be no broken lines when it is folded by hand. The color is low and the steel is hard; The heavy mixer is elastic, brittle and easy to break. Pure gold is softer, so it is generally not used to make inlaid jewelry. Therefore, any inlaid gold jewelry claiming to be 24K must be deceitful
8. Nitric acid test method
put the gold container into a small stainless steel container, drop nitric acid on the gold container, and observe the reaction. If the acid drops appear green, the gold ware is either made of common metal or plated with gold. If it is gold, it is gold-plated copper. If it is milk colored, it is gold and silver plated. If there is no response, then this gold is real
. According to the different luster and color of gold, we can roughly distinguish pure gold, K gold, real gold and fake gold. That is, the best gold is red yellow, and the fineness is more than 95%; The fineness of positive yellow is about 80%; The fineness of cyan yellow is about 70%; Yellow is slightly gray, and the fineness is about 50%. Therefore, the formula is "seven green, eight yellow, nine five red, yellow and white with gray and half gold". For jewelry that has been stored for a long time, there is a saying that "copper turns green, silver turns black, and gold never changes color"
Second, weigh
. The specific gravity of gold is 19.3, which is higher than that of other metals. The weight of gold with the same volume is 1.8 times that of silver and 2.2 times that of copper. Therefore, the real gold should feel heavy in the hand, while the fake gold should feel light
when gold jewelry with high phonology and color is knocked or thrown on hard ground, it will make a dull low sound of "puta, puta" without phonology and elasticity. K gold has phonology, sound and elasticity. The greater the elasticity, the sharper and longer the phonology, the worse the quality
Third, test hardness
. The higher the gold content of jewelry, the softer it is. It is easy to bend by hand. It has good toughness and is not easy to break. Scoring with hard things will leave clear scratches; The lower the gold content is, the harder it is. It needs a lot of force to bend, and it is easy to break. When it is scored with hard things, the scratch is not obvious
Fourth, look at the density
. The density of gold is 19.32g/cm3, which is about twice as heavy as silver, lead and tin in the same volume. Available formula: the mass (gram) of a certain gold jewelry is equal to the volume (cubic centimeter) of a certain gold jewelry. Find out the density of the measured gold jewelry. If the density is about 19.32g/cm3, it is pure gold or relatively pure gold. Otherwise, it is non pure gold or gold with color difference (this method has no damage to jewelry)
v. use acid point
. Grind the gold path of the identified jewelry and the matching brand on the touchstone, and use a glass rod to test nitric acid on the gold path. Because the chemical nature of gold is stable and does not react with acid, the color remains unchanged. If it is not gold or pure gold, the golden path will disappear or change. The change law is "three fast, three slow", that is, the disappearance of low quality is fast, and the disappearance of high quality is slow; Mixed gold disappears quickly, while clear gold disappears slowly; Large mixed gold disappears quickly, while small mixed gold disappears slowly. Depending on the disappearance of the golden path, the fineness of gold jewelry can be determined by comparing the cards.
1. Recognize the manufacturer and quality. The manufacturer and alloy purity (fineness) shall be printed on the surface of gold jewelry, and the words shall be clear. For example, the gold jewelry with pure gold produced by Beijing jewelry factory is printed with the words "Beijing E full gold". If there is no mark on the jewelry or the mark is ambiguous, the authenticity of the gold jewelry should be suspected 2. Check the color and hardness. Gold should have a dazzling red yellow. The higher the fineness, the more beautiful the color is. Therefore, people often say "seven green, eight yellow and nine five red" the so-called gold jewelry falsely named by other metals can be identified from the color. Gold has low hardness and is relatively soft. If you scratch with a knife or bite with your teeth, there will be traces. Other metals do not have this characteristic moreover, the higher the fineness of gold jewelry, the softer it is. You can check its fineness by bending if the fineness is low and contains more silver and copper, it is not easy to bend. This method can be used to identify whether the first jewelry is shoddy 3. Compare weights. The specific gravity of gold is 19.3, which is higher than that of silver, copper, aluminum, tin and other metals. Gold of the same volume is 40% heavier than silver, 1.2 times heavier than copper and 6.1 times heavier than aluminum. By comparing the weight, we can also identify whether other metals are used to counterfeit gold jewelry 4. Listen to the voice and identify the components. If the jewelry falls naturally from a high place, if it only makes a sound of "popping" and has no rhyme and elasticity, it is gold with a purity of 990 ‰. If the tone is deep, the rhyme is long and the elasticity is large, it means that the fineness is not high, and the jewelry contains more copper and other metal components 5. Nitric acid can distinguish the authenticity of gold. Put the jewelry in nitric acid, and if it is gold, it will be safe and will not change; If it is copper, it will emit green smoke 6. Taste to know the truth. Put the jewelry in your mouth, lick it with your tongue for a while, and then smoke. If there is no peculiar smell, it is gold; If it tastes like sweet silk, it means it is copper 7. Fire can tell the truth. "Real gold is not afraid of fire to refine", if the jewelry is still yellow and does not deform after being cooled by high-temperature fire, it is gold; If it turns black, it is not real gold, but a fake product made of other metals.
Good gold jewelry can be seen from the details of its appearance to see whether there are some defects and whether the gold is adulterated. The naked eye can make the first judgment. There will also be basic signs on jewelry, such as 999, 24K, etc the hardness of gold is relatively soft. A gold ring can be pinched with a little force. Many people also use this method to identify it.
if we want to buy gold jewelry, we must go to a regular jewelry store to buy it, so as to avoid buying fake gold the purity of gold jewelry cannot be guaranteed in other places. The gold jewelry produced by manufacturers is covered with gold content marks, such as 24K and 14k. If there is no mark, it will usually be false. There are also a few small ways to distinguish the authenticity of gold. Let's take a look
if you want to distinguish whether gold is real or fake, you can look at its color according to the different luster of gold, gold can be roughly divided into pure gold, K-gold, real gold and fake gold. That is to say, gold is best in red yellow, and the fineness is more than 95%; The fineness of positive yellow is about 80%; The fineness of cyan yellow is about 70%; The fineness of yellow with slight gray is about 50%, so there is a pithy formula "seven green, eight yellow, nine five red, yellow and white with gray and half gold"
if you want to distinguish whether gold is true or false, you can also look at its importance, which can also be seen the specific gravity of gold is higher than that of other materials. A small piece of gold jewelry may feel like falling, but copper of the same size will not fall and become lighter. This is because the density of gold is relatively high. After understanding this feature, you can use real gold jewelry to weigh it and find out the feeling. This feeling is obvious. Later, when you identify gold jewelry, you will have a deeper experience
if you want to distinguish whether gold is true or false, you can also look at its hardness, which can also be seen when we watch TV, usually in ancient costume movies and TV dramas, there may be a scenario where some people bite gold with their teeth to distinguish between real and fake. Pure gold has low hardness. If you bite it, it will leave tooth marks. Therefore, when identifying pure gold, you can try its hardness. If the hardness is too high, it cannot be pure gold
I personally think there are several ways to distinguish the authenticity of gold jewelry,
1. Look at the color
according to the different luster and color of gold, we can roughly distinguish pure gold, K gold, real gold and fake gold. The old saying "seven green and eight yellow, nine five red, yellow and white with gray half gold" passed down from pawnshops describes the purity of gold. If the color is green and white, the purity is not high, and if the color is red and yellow, the purity is high
2. Look at the gold with high hardness
it can leave traces when it is scratched with pins or nails. More than 97% of the gold jewelry with good quality will appear wrinkles at the bend after being bent two or three times, also known as fish scale lines; About 95% of the gold jewelry with good quality feels hard when it is bent, and the fish scale pattern is not obvious; Gold jewelry of about 90% quality is very hard when folded, without fish scale lines; Gold jewelry with more impurities will break after bending for two or three times; If it is made of raw gold, it will break when it is bent, and the section will have obvious sand grains
3. Look at the mark
according to the regulations, domestic gold jewelry should be marked with a mark of killing. Marking 24K means that the purity is above 99.6%, and marking 18K means that the purity is above 75%
4. Weight
the specific gravity of gold is 19.3g/cm3, and the fineness is greatly related to the specific gravity. When the specific gravity is close to 19.3, the higher the pure gold content is. Weigh its weight by hand to see whether it is commensurate with the volume. Large and light shapes may be adulterated. But generally, if you weigh it in your hand, you can feel that it is genuine gold jewelry if you have a slight sinking feeling. It can be seen that the gold is small and heavy. We should be alert to bulky and light ornaments and carefully distinguish whether they are fake or semi fake
5. Listen to the sound
when real gold with a fineness of more than 99% is thrown on the hard ground, it will make a popping sound without rhyme or elasticity. The false or low-quality gold sound is crisp without dullness. It usually makes a "Dangdang" sound, and there are aftersounds. It beats violently after landing
6. Scraping porcelain plate method
find an unglazed porcelain plate. If you don't have one, you can go to a home improvement shop and buy any porcelain. Scrape the porcelain plate with gold. If there are black scratches on the porcelain plate, your gold is not real gold. If the scratches are gold, it is real gold. This method can expose the fake gold, but your gold may be scratched
7. Try soft and hard
the higher the fineness of gold jewelry, the softer it is, and the less elastic it is. Real gold will have light marks when it is bitten by teeth or scratched by needles, and there will be no broken lines when it is folded by hand. The color is low and the steel is hard; The heavy mixer is elastic, brittle and easy to break. Pure gold is softer, so it is generally not used to make inlaid jewelry. Therefore, any inlaid gold jewelry claiming to be 24K must be deceitful
8. Nitric acid test method
put the gold container into a small stainless steel container, drop nitric acid on the gold container, and observe the reaction. If the acid drops appear green, the gold ware is either made of common metal or plated with gold. If it is gold, it is gold-plated copper. If it is milk colored, it is gold and silver plated. If there is no response, then this gold is real
First, look at the color
. According to the different luster and color of gold, we can roughly distinguish pure gold, K gold, real gold and fake gold. That is, the best gold is red yellow, and the fineness is more than 95%; The fineness of positive yellow is about 80%; The fineness of cyan yellow is about 70%; Yellow is slightly gray, and the fineness is about 50%. Therefore, the formula is "seven green, eight yellow, nine five red, yellow and white with gray and half gold". For jewelry that has been stored for a long time, there is a saying that "copper turns green, silver turns black, and gold never changes color"
Second, weigh
. The specific gravity of gold is 19.3, which is higher than that of other metals. The weight of gold with the same volume is 1.8 times that of silver and 2.2 times that of copper. Therefore, the real gold should feel heavy in the hand, while the fake gold should feel light
when gold jewelry with high phonology and color is knocked or thrown on hard ground, it will make a dull low sound of "puta, puta" without phonology and elasticity. K gold has phonology, sound and elasticity. The greater the elasticity, the sharper and longer the phonology, the worse the quality
Third, test hardness
. The higher the gold content of jewelry, the softer it is. It is easy to bend by hand. It has good toughness and is not easy to break. Scoring with hard things will leave clear scratches; The lower the gold content is, the harder it is. It needs a lot of force to bend, and it is easy to break. When it is scored with hard things, the scratch is not obvious
Fourth, look at the density
. The density of gold is 19.32g/cm3, which is about twice as heavy as silver, lead and tin in the same volume. Available formula: the mass (gram) of a certain gold jewelry is equal to the volume (cubic centimeter) of a certain gold jewelry. Find out the density of the measured gold jewelry. If the density is about 19.32g/cm3, it is pure gold or relatively pure gold. Otherwise, it is non pure gold or gold with color difference (this method has no damage to jewelry)
v. use acid point
. Grind the gold path of the identified jewelry and the matching brand on the touchstone, and use a glass rod to test nitric acid on the gold path. Because the chemical nature of gold is stable and does not react with acid, the color remains unchanged. If it is not gold or pure gold, the golden path will disappear or change. The change law is "three fast, three slow", that is, the disappearance of low quality is fast, and the disappearance of high quality is slow; Mixed gold disappears quickly, while clear gold disappears slowly; Large mixed gold disappears quickly, while small mixed gold disappears slowly. Depending on the disappearance of the golden path, the fineness of gold jewelry can be determined by comparing the cards.
1. Recognize the manufacturer and quality. The manufacturer and alloy purity (fineness) shall be printed on the surface of gold jewelry, and the words shall be clear. For example, the gold jewelry with pure gold produced by Beijing jewelry factory is printed with the words "Beijing E full gold". If there is no mark on the jewelry or the mark is ambiguous, the authenticity of the gold jewelry should be suspected
2. Check the color and hardness. Gold should have a dazzling red yellow. The higher the fineness, the more beautiful the color is. Therefore, people often say "seven green, eight yellow and nine five red"
the so-called gold jewelry falsely named by other metals can be identified from the color. Gold has low hardness and is relatively soft. If you scratch with a knife or bite with your teeth, there will be traces. Other metals do not have this characteristic
moreover, the higher the fineness of gold jewelry, the softer it is. You can check its fineness by bending
if the fineness is low and contains more silver and copper, it is not easy to bend. This method can be used to identify whether the first jewelry is shoddy
3. Compare weights. The specific gravity of gold is 19.3, which is higher than that of silver, copper, aluminum, tin and other metals. Gold of the same volume is 40% heavier than silver, 1.2 times heavier than copper and 6.1 times heavier than aluminum. By comparing the weight, we can also identify whether other metals are used to counterfeit gold jewelry
4. Listen to the voice and identify the components. If the jewelry falls naturally from a high place, if it only makes a sound of "popping" and has no rhyme and elasticity, it is gold with a purity of 990 ‰. If the tone is deep, the rhyme is long and the elasticity is large, it means that the fineness is not high, and the jewelry contains more copper and other metal components
5. Nitric acid can distinguish the authenticity of gold. Put the jewelry in nitric acid, and if it is gold, it will be safe and will not change; If it is copper, it will emit green smoke
6. Taste to know the truth. Put the jewelry in your mouth, lick it with your tongue for a while, and then smoke. If there is no peculiar smell, it is gold; If it tastes like sweet silk, it means it is copper
7. Fire can tell the truth. "Real gold is not afraid of fire to refine", if the jewelry is still yellow and does not deform after being cooled by high-temperature fire, it is gold; If it turns black, it is not real gold, but a fake product made of other metals.
Good gold jewelry can be seen from the details of its appearance to see whether there are some defects and whether the gold is adulterated. The naked eye can make the first judgment. There will also be basic signs on jewelry, such as 999, 24K, etc
the hardness of gold is relatively soft. A gold ring can be pinched with a little force. Many people also use this method to identify it.