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5 thoughts on “best place to buy wholesale jewelry How to distinguish the purity of gold?”
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cheap jewelry wholesale (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 marks. High -colored gold jewelry is low in color. 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: Throwing the real gold with more than 99 % to throw 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: Burn the jewelry to burn red (do not melt the jewelry) with the fire (do not melt the jewelry), and observe the color change after cooling. The degree of darker 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 are lower than LK will not be able to play the K -printed number according to regulations. At present, illegal elements are commonly used in the society to make fake cards and imitation stamps, and use rare gold, Asian gold, and even brass to impersonate real gold.
wholesale rebel jewelry For ordinary consumers, it is enough to go to the legal and national -recognized shops. You can still trust it. If you have any questions, you can consider some large brands. It is better and reliable. I don't believe it, I had to send it to a special institution for inspection. It is not easy for ordinary consumers to identify the true and false of gold by themselves. In the past, they can be measured by measuring density, that is, put gold in water, measure the volume, calculate the density, and then compare the known work. Now It's not reliable, there is a alloy like gold. It is unlikely to see the purity with your eyes. You need to use the instrument
wholesale native american indian jewelry Pay content for time limit to check for freenAnswer (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.n(3) Look at the hardness: pure gold is soft and low. It can be used to draw light marks with nails. Teeth bite can leave dental marks. High -colored gold jewelry is low in color. It can also test hardness, pure gold is soft, easy to bend, the lower the purity, the less likely to bend.n(4) Listening to the sound: Throwing the real gold with more than 99 % of the color 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.n(5) Burning with fire: The jewelry will be burned red (do not melt the jewelry) with the fire (do not melt the jewelry). After cooling, observe the color change. If the surface is still the original golden color is pure gold; It 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.n(6)看标记：国产黄金饰品都是按国际标准提纯配制成的，并打上戮记，如“24K”标明“足赤”或“足金”；18K金，标明“18K”字样，成色低Those who are in LOK can not play the K -printed number according to regulations. 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.nGold, gold jewelry has always been one of people's favorite jewelry and one of the very valuable currency materials.nGold purity refers to the content of gold. Generally, K is used to represent the purity of gold, the highest purity of 24K gold, 18K times, and so on. The name of the gold depends on its purity. Therefore, you can distinguish gold by looking at color, weight, see hardness, listen to sounds, use fire, and see markers and other methods.nIn accordance with the "Regulations and Naming Methods of Jewelry Pureth" (National Standard GB/T11887-2002), the minimum purity of the purity of the foot gold is 990, that is, the purity is not less than 990 ‰; That is, the purity is not less than 999 ‰. In the standards here, the purity range of precious metals in precious metal jewelry does not include welding components, but the finished product content must not be lower than the specified purity range. The regulations on the purity of gold in the national standard refer to the minimum purity value. In most of the domestic market, the purity of most gold and thousands of gold raw materials exceeds the lowest value (the purity of the foot gold reaches 995 ‰, and the purity of thousands of gold reaches 999.5 ‰).nThe name of the gold depends on its purity. For example, the gold with a purity of 99%is called "Foot Gold", the gold with a purity of 99.9%is called "Thousands of Gold", and the gold with a purity of 99.99% Gold can call it "100,000 enough gold" or "Gao Chunjin". There is an idiom called "Gold Wone to the Red and People Without Permanent". In fact, 100%of pure gold does not exist. The first reason is that in the refinement technology, the other is that the gold jewelry or gold bars will participate in other substances more or less during the processing process.nIndicates that the Kra "Clar" of the Gem is directly related to the gemstone. "Clar" comes from French Carat. In order to distinguish between the two, the weight unit of the gem was "carat", and the golden position symbol was selected "K". However, in the weight of the gem, 1 carat = 200 mg; 1k in the purity unit of gold is 1/24 or converted to 4.1666%, which means that the gold content is 1/24 or 4.1666%. 18K gold is said to be the gold content of 18/24, which is 75%, and the remaining 25%are other metals. In gold jewelry, copper, silver, and so on. 24K gold means pure gold. Relatively speaking, Chinese consumers have high requirements for gold jewelry, so in the Chinese market, the more common gold jewelry varieties are 24K and 18K. However, in Europe and the United States, people have greater demand for gold jewelry. We can see many low -purity gold jewelry, such as 12K gold, 14K gold, etc. These purity mean is 50%and 58.33%of the gold content.nMore 8nBleak
atlanta wholesale jewelry supply How to identify the authenticity of gold jewelry? The method of holding the correct measurement of gold, the number of gold K and the proportion of the proper measurement is important. This article provides 8 commonly used methods for appraisal gold and false, for the reference of the golden code, jewelry bank, precious metal recycling analysis room, and waste metal recycling operators!
1, color disciracy:
looking at the color of the golden appearance. As the saying goes, gold is "seven green, eight yellow, nine purple, and ten red", which shows different colors due to different types and compositions of impurities. Essence Pure gold is moist and glittering, while mixed gold has hemp. The jewelry containing gold 70 % is yellow in the middle, 80 % of Jin is yellow, and 90 % of the gold is yellow transparent purple, and 10 % of the gold is red.
2, weight:
The proportion of gold is 19.32g/cm3, which has a large relationship with the proportion. When the proportion is close to 19.32, the higher the gold content. The weight of the hand is consistent with whether the size is consistent with the size, the shape is large and the weight is lighter, and it may be adulterated. However, in the hands, if you have a slight sinking, you can perceive the real gold jewelry, which shows that the gold body is small and heavy; the stupid and fluttering jewelry should be vigilant, seriously distinguish whether the fake or semi -fake.
3, test soft:
The higher the color of the gold jewelry, the softer, and the more elastic. The real gold bite or the needle will have light marks. Low -colored steel is hard; those with heavy mixes are elastic, crispy and easy to break. The pure gold is soft, and it is generally not used to make embedded jewelry. Therefore, all inlaid gold jewelry claims to be 24K and there must be fraud.
4, knocking:
The two pieces of the same gold jewelry collided, the high -colored person's loud sound, low -colored those with loud noise, mixed gold, their sounds.
5, reagent method:
The tests of 45 % nitric acid: Gold and platinum have no change, silver becomes black, and copper is green foam. This is because the chemical properties of gold are stable and will not be oxidized in any state, and it is also very stable in water, air, hydrogen sulfide or salt, or alkaline environment. Gold is soluble in any kind of single acid, which is only dissolved in Wang Shui (Wang Shui: hydrochloric acid and nitric acid volume with a mixture of 3 to 1).
6. View the printing marker method:
The gold jewelry produced by regular manufacturers, all covered with gold content and manufacturer marks, such as 24K, 22K, 18K, etc.
7, fire burning method:
The so -called real gold is not afraid of fire training, Bao Jin is easy to crack when it encounters fire.
8, K numbers, proportion and purity test method:
This use of drainage method (also known as water hanging method or hanging water method) to measure the number of K, proportion and purity of gold jewelry. The appraisal gold jewelry is rapid and accurate, and there is no damage to the gold jewelry, which can better protect the pawns. Using Taiwan's Mazhihak GP-300K gold K, proportion, and purity tester, MH-300K gold K number determination instrument, platinum PT value measuring instrument.
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