5 thoughts on “How to understand the basic knowledge of jewelry stores”
Hugh
1. Jewelry is divided into natural jewelry jade (natural gemstones, natural jade, natural organic gemstones) and artificial gemstones (artificial gems, recreation gems, gems, synthetic gems). 2, jewelry sales are special industries stipulated by the Ministry of Labor and Social Security. To work, you need to obtain qualifications for precious metals, jewelry and jade salespersons, which are divided into primary, intermediate and senior. Mainly learn some basic knowledge and sales skills in precious metals, jewelry and jade, as well as relevant laws and regulations, and can go to the local labor department to learn about it. 3, the contents of jewelry labels include: name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; precious metal jewelry sold according to weight should also include weight. 4, each piece of gold jewelry, platinum ornaments and jewelry is not greater than 1000g, the allowable difference is ± 0.01g. 5, when the amount of each silver jewelry is not greater than 200g, the allowable difference is ± 0.05g; when the permission is ± 0.5g more than 200g. 6. The operator shall not operate the precious metal jewelry without labels and logo content that does not meet the prescribed content. extension data Jewelry is divided into a broad sense and narrow sense. The narrow jewelry single refers to jade products. Jewelry in broad sense should include gold, silver and natural materials (minerals, rocks, creatures, etc.). A certain value of jewelry, crafts or other treasures are called jewelry. Therefore, in ancient times, there were "gold and silver jewelry" to distinguish gold and silver and jewelry. With the development of society and economy, in addition to natural gems and artificial gems, the concept of jewelry should be expanded to gold, silver, jewelry, etc. The industry that operates these items is collectively referred to as "jewelry industry". The scope of "jewelry" is much greater than the concept of "gemstone" in the broad sense. Gem in a broad sense refers to the raw materials that are suitable for pondering or engraving as jewelry or crafts. Reference materials: Baidu Encyclopedia-Jewelry
1. Answer: [1] See what type of jewelry you are going to do. 1. If you are crystal, you do n’t need to train. 2, if it is an precious metal or diamond, salamander, rubber, there must be a national salesperson qualification certificate. 3. If it is a silver jewelry, you do n’t need to train. As long as you know some of the common knowledge, such as the hands and feet when you put things, do n’t scrape, grind, smash, and fall; Things; don't touch cosmetics, nothing else. [2] Jewelry sales are special industries stipulated by the Ministry of Labor and Social Security. To work, you need to obtain a certificate of precious metal jewelry and jade salesperson. Mainly learn some basic knowledge and sales skills in precious metal jewelry and jade, as well as relevant laws and regulations, you can go to the local labor department to learn about it. [3], precious metal jewelry refers to the four precious metal materials such as gold, platinum, 钯 and silver and its gold containing jewelry. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰). [4] The content of the jewelry label should include the name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; Essence [5] When the amount of platinum jewelry, platinum ornaments is not greater than 1000g, the allowable difference is ± 0.01g. 18. When the value of each silver jewelry is not greater than 200g, the allowing difference is ± 0.05g; when it exceeds 200g, the allowable difference is ± 0.5g. [6] The operator shall not operate the precious metal jewelry without labeling and the content of the label and logo. . Expansion information: Jewelry Jewelry Basic Knowledge Manual Part 1: Jewelry Jewelry Basic Knowledge
, precious metal jewelry: 1, precious metal jewelry refers Four precious metal materials such as silver and jewelry made of gold. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰). 2, the element symbol of gold is AU, and English is GOLD. The purity of the purity of gold jewelry is: six types of thousands of gold, foot gold, 22K, 18K, 14K, and 9K: 1) The gold content of thousands of gold should be greater than or equal to 999 ‰; 2) the gold content of foot gold should be greater than or or or It is equal to 990 ‰; 3) 22K's gold content should be greater than or equal to 916 ‰; 4) 18K's gold content should be greater than or equal to 750 ‰; 5) 14K's gold content should be greater than or equal to 585 ‰; 6) 9K's gold content should be greater than or equal to 375 375 ‰; 7) 24K is the theoretical value, and its gold content is 100%; 3, foot gold, and thousands of gold jewelry are used, and its accessories must not be less than 750 ‰.
4, precious metal jewelry must not contain elements that are harmful to human health. 5. Each precious metal jewelry should have marks. The content of the mark should include the quality of the manufacturer's code, purity, material, and the main diamond inlaid of the jewelry (above 0.10 carats). 6, the purity and material representation method in the mark (example explanation): 1) Gold jewelry: G18K (or gold 750, AU750, G750), foot gold (or gold 990, AU990, G990), thousands of feet Gold, 7, gold is the most precious and most rare metal one in the metal kingdom. Metals can be divided into two categories: iron (Ferrous) and excluding iron (). Iron metals include pure iron and steel, both of which are metal with more output and cheap. It can be divided into 3 groups without iron: valuable metals, basic metals and alloys. The manufacturing jewelry uses a metal without iron. The texture of gold is pure and has the characteristics of coquettish people. It is the most popular metal. The analysis report of geologists pointed out that in addition to the tantalum discovered in 1802, gold is the most rare metal in the world, which proves that it is rare. 8, pure gold (that is, foot gold and thousands of gold) jewelry is high, and some consumers ask that such high gold content, if the gold welded with other materials is welded, how to ensure the color of the material's formation Intersection In fact, the process of processing pure gold jewelry in my country is not the same as the process of low processing (such as 14K, 18K) jewelry. The welding of low -colored jewelry is made of welded. The formula of the weld can ensure that the gold content of its jewelry is not lower than the prescribed standards. For example, the welding of 14K jewelry, the gold content it uses is 58.5 % (14K standard gold content), and the remaining 41.5 % is a low melting point material. Such a solder can weld the jewelry and ensure that the gold content of the jewelry is unchanged. However, if you have to prepare pure gold welded, the problem comes, because the gold content of the solder is not less than 99 % or 99.9 %, the low melting materials in the solder can only be controlled within 0.1 % 1 %, relying on such a diced point Low melting materials cannot meet the requirements. Therefore, pure gold jewelry cannot be welded with welded. 9, gold, as a precious metal, has good physical characteristics, manifested as: high melting point, lfers L064.43 degrees, "real gold is not afraid of fire refining" means that gold under general flames is not easy to melt. The density is large, 19.31 grams / cubic centimeter (at 18 ° C), and feels heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced. . Reference materials: Jewelry Jewelry Basic Knowledge and Sales Technology Baidu Encyclopedia
, precious metal jewelry: 1, precious metal jewelry refers to gold, platinum, 钯, and silver Wait four precious metal materials and its jewelry made of gold. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰). 2, the element symbol of gold is AU, and English is GOLD. The purity of the purity of gold jewelry is: six types of thousands of gold, foot gold, 22K, 18K, 14K, and 9K: 1) The gold content of thousands of gold should be greater than or equal to 999 ‰; 2) the gold content of foot gold should be greater than or or or It is equal to 990 ‰; 3) 22K's gold content should be greater than or equal to 916 ‰; 4) 18K's gold content should be greater than or equal to 750 ‰; 5) 14K's gold content should be greater than or equal to 585 ‰; 6) 9K's gold content should be greater than or equal to 375 375 ‰; 7) 24K is the theoretical value, and its gold content is 100%; the element symbols of 3, platinum are PT, and the purity specifications of platinum (platinum) jewelry include foot platinum (foot white gold), 950, 900, 850, etc. Four. The platinum content of foot platinum should be greater than or equal to 990 ‰. 4, the element symbol of 元 is PD. The purity specifications of jewelry are two types: foot 钯 and 950. The content of the feet should be greater than or equal to 990 ‰. 5, the element symbol of the silver is AG, and the English is Silver. The purity specifications of silver jewelry include three types of silver, 925 and 800. The silver content of foot silver should be greater than or equal to 990 ‰. 6, foot gold and thousands of gold jewelry are needed for use, and its accessories must not be less than 750 ‰. 7, precious metal jewelry must not contain elements that are harmful to human health. 8. Each precious metal jewelry should have marks. The content of the mark should include the quality of the manufacturer's code, purity, material, and the main diamonds inlaid with the main diamonds (above 0.10 carats). 9, the purity and material representation method in the mark (examples): 1) Gold jewelry: G18K (or gold 750, AU750, G750), foot gold (or gold 990, AU990, G990), thousands of feet Gold, 2) Platinum jewelry: PT900, PT950, PT990 or foot platinum, 3) 钯 jewelry: PD950, PD990 or foot 钯, 4) Silver jewelry: silver 925, AG925, S925, foot silver or AG990 or AG990 ; 10, the 18K gold inlaid 0.45 carat diamonds produced by Huifu Jewelry Company should be: HF18K Gold 0.45ct (D). The jewelry marks of the foot gold jewelry produced by Decheng Jewelry Co., Ltd. are: DC AU 990. 11, the mark of precious metal jewelry shall be printed on the jewelry by the producer. 12. Each precious metal jewelry should be labeled when selling, and the label can be one or several. 13, the content of the jewelry label should include the name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; precious metal jewelry sold according to weight should also include weight. 14. The operator must not operate the precious metal jewelry without labeling and the content of the logo. 15, the mark and label of precious metal jewelry should be clear, firm, and easy to identify. 16, the weight of the precious metal jewelry and materials is used as a meter (g) measuring unit. 17, each gold jewelry, platinum accessories and jewelry is not greater than 1000g, the allowable difference is ± 0.01g. 18. When the value of each silver jewelry is not greater than 200g, the allowing difference is ± 0.05g; when it exceeds 200g, the allowable difference is ± 0.5g. 19. When the precious metal jewelry is weighing, it must be passed by the balance inspection, and within the compulsory verification cycle. 21, gold is the most precious and most rare metal one in the metal kingdom. Metals can be divided into two categories: iron (Ferrous) and excluding iron (). Iron metals include pure iron and steel, both of which are metal with more output and cheap. It can be divided into 3 groups without iron: valuable metals, basic metals and alloys. The manufacturing jewelry uses a metal without iron. The texture of gold is pure and has the characteristics of coquettish people. It is the most popular metal. The analysis report of geologists pointed out that in addition to the tantalum discovered in 1802, gold is the most rare metal in the world, which proves that it is rare. 22, pure gold (that is, gold and thousands of gold) jewelry is high, and some consumers ask that such a high gold content, if the gold welded with other materials is welded, how to ensure the color of the material's formation Intersection In fact, the process of processing pure gold jewelry in my country is not the same as the process of low processing (such as 14K, 18K) jewelry. Low The welding of color jewelry is performed with welded. The formula of the weld can ensure that the gold content of its jewelry is not lower than the prescribed standard. For example, the welding of 14K jewelry, the gold content it uses is 58.5 % (14K standard gold content), and the remaining 41.5 % is a low melting point material. Such a solder can weld the jewelry and ensure that the gold content of the jewelry is unchanged. However, if you have to prepare pure gold welded, the problem comes, because the gold content of the solder is not less than 99 % or 99.9 %, the low melting materials in the solder can only be controlled within 0.1 % 1 %, relying on such a diced point Low melting materials cannot meet the requirements. Therefore, pure gold jewelry cannot be welded with welded. 23. Gold, as a precious metal, has good physical characteristics, manifested as: high melting point, reaching L064.43 degrees Celsius, "real gold is not afraid of fire refining" means that gold under general flames is not easy to melt. The density is large, 19.31 grams / cubic centimeter (at 18 ° C), and feels heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced. 24. After wearing gold jewelry for a period of time, many people find color change or fading. Many people think that this is the insufficient color of gold jewelry, so they go to the store to negotiate or go to the consumer association to complain, but the defendant's gold jewelry’s gold jewelry Fading is not the insufficient color of gold jewelry, but for other reasons. So what are the reasons? The discoloration or fading of gold jewelry is closely related to human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc. After contacting the silver and copper in gold jewelry, these substances will produce chemical reactions, produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt is often dropped from gold jewelry to pollute the skin of the wearer, leaving a very obvious black stain on the skin. At present, cosmetics have also become one of the indispensable "characters" of people's lives. If you apply it on the skin of the gold jewelry, it will undoubtedly provide opportunities for cosmetics containing chemicals and the golden jewelry that is most afraid of chemical erosion, and the results can be imagined. Some cosmetics also contain some fine hard particles, which can form another type of dirt, thereby wear gold jewelry.
What type of jewelry shops do you want to do? There are special jade articles, crystal, gold, diamonds ... There are too many types of jewelry, and related basic knowledge can’t remember for a few years.
1. Jewelry is divided into natural jewelry jade (natural gemstones, natural jade, natural organic gemstones) and artificial gemstones (artificial gems, recreation gems, gems, synthetic gems).
2, jewelry sales are special industries stipulated by the Ministry of Labor and Social Security. To work, you need to obtain qualifications for precious metals, jewelry and jade salespersons, which are divided into primary, intermediate and senior. Mainly learn some basic knowledge and sales skills in precious metals, jewelry and jade, as well as relevant laws and regulations, and can go to the local labor department to learn about it.
3, the contents of jewelry labels include: name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; precious metal jewelry sold according to weight should also include weight.
4, each piece of gold jewelry, platinum ornaments and jewelry is not greater than 1000g, the allowable difference is ± 0.01g.
5, when the amount of each silver jewelry is not greater than 200g, the allowable difference is ± 0.05g; when the permission is ± 0.5g more than 200g.
6. The operator shall not operate the precious metal jewelry without labels and logo content that does not meet the prescribed content.
extension data
Jewelry is divided into a broad sense and narrow sense. The narrow jewelry single refers to jade products. Jewelry in broad sense should include gold, silver and natural materials (minerals, rocks, creatures, etc.). A certain value of jewelry, crafts or other treasures are called jewelry. Therefore, in ancient times, there were "gold and silver jewelry" to distinguish gold and silver and jewelry.
With the development of society and economy, in addition to natural gems and artificial gems, the concept of jewelry should be expanded to gold, silver, jewelry, etc. The industry that operates these items is collectively referred to as "jewelry industry". The scope of "jewelry" is much greater than the concept of "gemstone" in the broad sense. Gem in a broad sense refers to the raw materials that are suitable for pondering or engraving as jewelry or crafts.
Reference materials: Baidu Encyclopedia-Jewelry
1. Answer: [1] See what type of jewelry you are going to do.
1. If you are crystal, you do n’t need to train.
2, if it is an precious metal or diamond, salamander, rubber, there must be a national salesperson qualification certificate.
3. If it is a silver jewelry, you do n’t need to train. As long as you know some of the common knowledge, such as the hands and feet when you put things, do n’t scrape, grind, smash, and fall; Things; don't touch cosmetics, nothing else.
[2] Jewelry sales are special industries stipulated by the Ministry of Labor and Social Security. To work, you need to obtain a certificate of precious metal jewelry and jade salesperson. Mainly learn some basic knowledge and sales skills in precious metal jewelry and jade, as well as relevant laws and regulations, you can go to the local labor department to learn about it.
[3], precious metal jewelry refers to the four precious metal materials such as gold, platinum, 钯 and silver and its gold containing jewelry. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰).
[4] The content of the jewelry label should include the name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; Essence
[5] When the amount of platinum jewelry, platinum ornaments is not greater than 1000g, the allowable difference is ± 0.01g. 18. When the value of each silver jewelry is not greater than 200g, the allowing difference is ± 0.05g; when it exceeds 200g, the allowable difference is ± 0.5g.
[6] The operator shall not operate the precious metal jewelry without labeling and the content of the label and logo.
. Expansion information: Jewelry Jewelry Basic Knowledge Manual Part 1: Jewelry Jewelry Basic Knowledge
, precious metal jewelry:
1, precious metal jewelry refers Four precious metal materials such as silver and jewelry made of gold. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰).
2, the element symbol of gold is AU, and English is GOLD. The purity of the purity of gold jewelry is: six types of thousands of gold, foot gold, 22K, 18K, 14K, and 9K:
1) The gold content of thousands of gold should be greater than or equal to 999 ‰; 2) the gold content of foot gold should be greater than or or or It is equal to 990 ‰; 3) 22K's gold content should be greater than or equal to 916 ‰; 4) 18K's gold content should be greater than or equal to 750 ‰; 5) 14K's gold content should be greater than or equal to 585 ‰; 6) 9K's gold content should be greater than or equal to 375 375 ‰; 7) 24K is the theoretical value, and its gold content is 100%;
3, foot gold, and thousands of gold jewelry are used, and its accessories must not be less than 750 ‰.
4, precious metal jewelry must not contain elements that are harmful to human health.
5. Each precious metal jewelry should have marks. The content of the mark should include the quality of the manufacturer's code, purity, material, and the main diamond inlaid of the jewelry (above 0.10 carats).
6, the purity and material representation method in the mark (example explanation):
1) Gold jewelry: G18K (or gold 750, AU750, G750), foot gold (or gold 990, AU990, G990), thousands of feet Gold,
7, gold is the most precious and most rare metal one in the metal kingdom. Metals can be divided into two categories: iron (Ferrous) and excluding iron (). Iron metals include pure iron and steel, both of which are metal with more output and cheap. It can be divided into 3 groups without iron: valuable metals, basic metals and alloys. The manufacturing jewelry uses a metal without iron. The texture of gold is pure and has the characteristics of coquettish people. It is the most popular metal. The analysis report of geologists pointed out that in addition to the tantalum discovered in 1802, gold is the most rare metal in the world, which proves that it is rare.
8, pure gold (that is, foot gold and thousands of gold) jewelry is high, and some consumers ask that such high gold content, if the gold welded with other materials is welded, how to ensure the color of the material's formation Intersection In fact, the process of processing pure gold jewelry in my country is not the same as the process of low processing (such as 14K, 18K) jewelry. The welding of low -colored jewelry is made of welded. The formula of the weld can ensure that the gold content of its jewelry is not lower than the prescribed standards. For example, the welding of 14K jewelry, the gold content it uses is 58.5 % (14K standard gold content), and the remaining 41.5 % is a low melting point material. Such a solder can weld the jewelry and ensure that the gold content of the jewelry is unchanged. However, if you have to prepare pure gold welded, the problem comes, because the gold content of the solder is not less than 99 % or 99.9 %, the low melting materials in the solder can only be controlled within 0.1 % 1 %, relying on such a diced point Low melting materials cannot meet the requirements. Therefore, pure gold jewelry cannot be welded with welded.
9, gold, as a precious metal, has good physical characteristics, manifested as: high melting point, lfers L064.43 degrees, "real gold is not afraid of fire refining" means that gold under general flames is not easy to melt. The density is large, 19.31 grams / cubic centimeter (at 18 ° C), and feels heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
. Reference materials: Jewelry Jewelry Basic Knowledge and Sales Technology Baidu Encyclopedia
Jewelry Jewelry Basic Knowledge Handbook
The first part: Jewelry Jewelry Basic Knowledge
, precious metal jewelry:
1, precious metal jewelry refers to gold, platinum, 钯, and silver Wait four precious metal materials and its jewelry made of gold. The purity of the precious metal jewelry is expressed at the minimum value of the precious metal content, and there must be no negative difference. It is represented by thousands of points (‰).
2, the element symbol of gold is AU, and English is GOLD. The purity of the purity of gold jewelry is: six types of thousands of gold, foot gold, 22K, 18K, 14K, and 9K:
1) The gold content of thousands of gold should be greater than or equal to 999 ‰; 2) the gold content of foot gold should be greater than or or or It is equal to 990 ‰; 3) 22K's gold content should be greater than or equal to 916 ‰; 4) 18K's gold content should be greater than or equal to 750 ‰; 5) 14K's gold content should be greater than or equal to 585 ‰; 6) 9K's gold content should be greater than or equal to 375 375 ‰; 7) 24K is the theoretical value, and its gold content is 100%; the element symbols of
3, platinum are PT, and the purity specifications of platinum (platinum) jewelry include foot platinum (foot white gold), 950, 900, 850, etc. Four. The platinum content of foot platinum should be greater than or equal to 990 ‰.
4, the element symbol of 元 is PD. The purity specifications of jewelry are two types: foot 钯 and 950. The content of the feet should be greater than or equal to 990 ‰.
5, the element symbol of the silver is AG, and the English is Silver. The purity specifications of silver jewelry include three types of silver, 925 and 800. The silver content of foot silver should be greater than or equal to 990 ‰.
6, foot gold and thousands of gold jewelry are needed for use, and its accessories must not be less than 750 ‰.
7, precious metal jewelry must not contain elements that are harmful to human health.
8. Each precious metal jewelry should have marks. The content of the mark should include the quality of the manufacturer's code, purity, material, and the main diamonds inlaid with the main diamonds (above 0.10 carats).
9, the purity and material representation method in the mark (examples):
1) Gold jewelry: G18K (or gold 750, AU750, G750), foot gold (or gold 990, AU990, G990), thousands of feet Gold,
2) Platinum jewelry: PT900, PT950, PT990 or foot platinum, 3) 钯 jewelry: PD950, PD990 or foot 钯,
4) Silver jewelry: silver 925, AG925, S925, foot silver or AG990 or AG990 ;
10, the 18K gold inlaid 0.45 carat diamonds produced by Huifu Jewelry Company should be: HF18K Gold 0.45ct (D). The jewelry marks of the foot gold jewelry produced by Decheng Jewelry Co., Ltd. are: DC AU 990.
11, the mark of precious metal jewelry shall be printed on the jewelry by the producer.
12. Each precious metal jewelry should be labeled when selling, and the label can be one or several.
13, the content of the jewelry label should include the name, material, content, producer (operator) name, address, product standard number, product quality qualification certificate; precious metal jewelry sold according to weight should also include weight.
14. The operator must not operate the precious metal jewelry without labeling and the content of the logo.
15, the mark and label of precious metal jewelry should be clear, firm, and easy to identify.
16, the weight of the precious metal jewelry and materials is used as a meter (g) measuring unit.
17, each gold jewelry, platinum accessories and jewelry is not greater than 1000g, the allowable difference is ± 0.01g. 18. When the value of each silver jewelry is not greater than 200g, the allowing difference is ± 0.05g; when it exceeds 200g, the allowable difference is ± 0.5g.
19. When the precious metal jewelry is weighing, it must be passed by the balance inspection, and within the compulsory verification cycle.
21, gold is the most precious and most rare metal one in the metal kingdom. Metals can be divided into two categories: iron (Ferrous) and excluding iron (). Iron metals include pure iron and steel, both of which are metal with more output and cheap. It can be divided into 3 groups without iron: valuable metals, basic metals and alloys. The manufacturing jewelry uses a metal without iron. The texture of gold is pure and has the characteristics of coquettish people. It is the most popular metal. The analysis report of geologists pointed out that in addition to the tantalum discovered in 1802, gold is the most rare metal in the world, which proves that it is rare.
22, pure gold (that is, gold and thousands of gold) jewelry is high, and some consumers ask that such a high gold content, if the gold welded with other materials is welded, how to ensure the color of the material's formation Intersection In fact, the process of processing pure gold jewelry in my country is not the same as the process of low processing (such as 14K, 18K) jewelry. Low
The welding of color jewelry is performed with welded. The formula of the weld can ensure that the gold content of its jewelry is not lower than the prescribed standard. For example, the welding of 14K jewelry, the gold content it uses is 58.5 % (14K standard gold content), and the remaining 41.5 % is a low melting point material. Such a solder can weld the jewelry and ensure that the gold content of the jewelry is unchanged. However, if you have to prepare pure gold welded, the problem comes, because the gold content of the solder is not less than 99 % or 99.9 %, the low melting materials in the solder can only be controlled within 0.1 % 1 %, relying on such a diced point Low melting materials cannot meet the requirements. Therefore, pure gold jewelry cannot be welded with welded. 23. Gold, as a precious metal, has good physical characteristics, manifested as: high melting point, reaching L064.43 degrees Celsius, "real gold is not afraid of fire refining" means that gold under general flames is not easy to melt. The density is large, 19.31 grams / cubic centimeter (at 18 ° C), and feels heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
24. After wearing gold jewelry for a period of time, many people find color change or fading. Many people think that this is the insufficient color of gold jewelry, so they go to the store to negotiate or go to the consumer association to complain, but the defendant's gold jewelry’s gold jewelry Fading is not the insufficient color of gold jewelry, but for other reasons. So what are the reasons? The discoloration or fading of gold jewelry is closely related to human sweat. 99%of human sweats are water, and about 1%are waste and harmful substances in the human body, such as chlorine substitutes, lactic acid, urea ammonia, etc. After contacting the silver and copper in gold jewelry, these substances will produce chemical reactions, produce silver chloride and copper sulfide, and show dark black chemical salt. This kind of chemical salt is often dropped from gold jewelry to pollute the skin of the wearer, leaving a very obvious black stain on the skin. At present, cosmetics have also become one of the indispensable "characters" of people's lives. If you apply it on the skin of the gold jewelry, it will undoubtedly provide opportunities for cosmetics containing chemicals and the golden jewelry that is most afraid of chemical erosion, and the results can be imagined. Some cosmetics also contain some fine hard particles, which can form another type of dirt, thereby wear gold jewelry.
Is to help you, hope to adopt, thank you
What type of jewelry shops do you want to do? There are special jade articles, crystal, gold, diamonds ... There are too many types of jewelry, and related basic knowledge can’t remember for a few years.
This is best to go to the jewelry shop for a while