CHOOSE JEWELRY SKILLS, CHOOSE JEWELRY SKILLS AND METHODS
1. Look at the color; the golden color is manifested as Qiqing, Eight Huang, and Jiu Chi, which means that gold jewelry reaches 70 % of the gold content color. Ninety percent should be red. Therefore, gold has a dazzling red-yellow luster. The higher the purity, the more beautiful the color. Other metals, especially copper, often impersonate gold with copper, silver, and low purity, and the innocence is still intact compared to high-purity gold.
2. The weight of gold is 19.32 grams per cubic centimeter, which is more significant than metals such as silver, copper, lead, and zinc. Therefore, high-purity gold jewelry will feel heavy on the hand; unlike other precious metals, it feels light. Of course, if it is a golden bag of tungsten in gold, it is useless to use the weight method because the proportion of metal tungsten is the same as gold.
3. Listen to the sound, and fall the gold jewelry about one foot from the plane naturally, and the gold with a purity of more than 990 ‰ (foot gold) or more. Because the non-elasticity will make a dull noise, the gold or fake gold with low purity will generally emit out of the gold or fake gold. The sound of "Dang Dang" will have a sound and be beaten after landing.
4. Test hardness, low purity gold, hardness, softness, and toughness; use nails to draw light marks; teeth can leave tooth marks and are easy to bend; the more copper, the greater the hardness. For finished gold jewelry, because it is not convenient for scratching and biting, as long as you observe it, you will see the scratches left by the surface due to the transportation or placement process.
5. See the mark. According to national standards, precious metal jewelry should print the manufacturer code, unique metal materials, and lovely metal purity before leaving the factory, and the precious metals with different materials or purity make a piece of jewelry, which should be printed separately. If the gold content reaches 990 ‰, it is necessary to print sufficient gold or G990, and the gold content goes 999 ‰ to print thousands of gold or G999. The gold content goes 750 ‰ to print 18K gold or G750 or AU750. The word "GP" is printed on a gold plate.
6. Burning with fire: since ancient times, there has been a saying that "real gold is not afraid of fire," so gold is high-temperature resistant. Its melting point is 1063.43 ° C, and gold will not be oxidized in the melting state. Therefore, the jewelry is burned with fire with fire. After cooling, if the surface is still the original golden yellow, it is high-purity gold; if the color becomes darker or darkened to varying degrees, the purity is low or not gold.
7. Repeated claims that gold jewelry must be remembered immediately because the gold jewelry is soft and the abrasion resistance is not high. After wearing it for a long time, the gold jewelry is easy to wear, which reduces weight. In the future, doubt will occur. In addition, when you buy gold jewelry, remember to ask the merchant for a regular invoice.
8. See if there are any processing traces; the surface of the gold jewelry must be bright and clean, there are no marks of apparent processing, no prominent sharp corners, and the feel is smooth. There are no pores, impurities, etc., on the surface. In addition, you should also carefully observe whether there are cracks to avoid buying secondary processing accessories.
2. The weight of gold is 19.32 grams per cubic centimeter, which is more significant than metals such as silver, copper, lead, and zinc. Therefore, high-purity gold jewelry will feel heavy on the hand; unlike other precious metals, it feels light. Of course, if it is a golden bag of tungsten in gold, it is useless to use the weight method because the proportion of metal tungsten is the same as gold.
3. Listen to the sound, and fall the gold jewelry about one foot from the plane naturally, and the gold with a purity of more than 990 ‰ (foot gold) or more. Because the non-elasticity will make a dull noise, the gold or fake gold with low purity will generally emit out of the gold or fake gold. The sound of "Dang Dang" will have a sound and be beaten after landing.
4. Test hardness, low purity gold, hardness, softness, and toughness; use nails to draw light marks; teeth can leave tooth marks and are easy to bend; the more copper, the greater the hardness. For finished gold jewelry, because it is not convenient for scratching and biting, as long as you observe it, you will see the scratches left by the surface due to the transportation or placement process.
5. See the mark. According to national standards, precious metal jewelry should print the manufacturer code, unique metal materials, and lovely metal purity before leaving the factory, and the precious metals with different materials or purity make a piece of jewelry, which should be printed separately. If the gold content reaches 990 ‰, it is necessary to print sufficient gold or G990, and the gold content goes 999 ‰ to print thousands of gold or G999. The gold content goes 750 ‰ to print 18K gold or G750 or AU750. The word "GP" is printed on a gold plate.
6. Burning with fire: since ancient times, there has been a saying that "real gold is not afraid of fire," so gold is high-temperature resistant. Its melting point is 1063.43 ° C, and gold will not be oxidized in the melting state. Therefore, the jewelry is burned with fire with fire. After cooling, if the surface is still the original golden yellow, it is high-purity gold; if the color becomes darker or darkened to varying degrees, the purity is low or not gold.
7. Repeated claims that gold jewelry must be remembered immediately because the gold jewelry is soft and the abrasion resistance is not high. After wearing it for a long time, the gold jewelry is easy to wear, which reduces weight. In the future, doubt will occur. In addition, when you buy gold jewelry, remember to ask the merchant for a regular invoice.
8. See if there are any processing traces; the surface of the gold jewelry must be bright and clean, there are no marks of apparent processing, no prominent sharp corners, and the feel is smooth. There are no pores, impurities, etc., on the surface. In addition, you should also carefully observe whether there are cracks to avoid buying secondary processing accessories.