3 thoughts on “What changes in 18K gold after being burned by fire”
Annie
18K gold may turn black after being burned by fire, because 18K gold contains 75%golden ingredients, and the remaining 25%are other precious metals, which will turn black after heating; It also depends on what metal metal is the other 25%of the other metal. The is favored by jewelry artists due to the characteristics of 18K gold flexibility, easy shape, strong personality, strong personality, and expressiveness, and become the selection material for jewelry art. The expansion information: 18k jewelry is yellow or white (determined by another 25%of the ingredients). The white 18K is usually called "platinum". 18K necklaces often include: 18K, AU750, G750 and other tags. 1K's gold content is 4.1667%, 18K is 18 × 4.1667%= 75%, that is, the gold content of "18K gold" is 75%. "18K Platinum" is the gold content of 75%, and the content of 钯 or nickel is 25%. Reference information Source: Baidu 100-family-18K gold
If you want to distinguish 18K gold, this naked eye is difficult to distinguish. You need to distinguish it from the product label steel printing. Zhen 18K gold products are engraved with steel prints G18K, 18K or 750, and tag names are 18K gold; fake 18K gold steel prints are 18kgp or 18kgf, etc. The label is called alloy or 18K casting; It is to get a regular gold shop to test the other party with professional instruments. 18k golden fire does not necessarily turn black, which depends on what metal other alloys are. The gold of our country: 99.6%(inclusive) is 24K. 18K is the golden ratio of 18, 18/24 = 0.75, which is 750 thousandths. Therefore, the mark of 18K gold is AU750, 18K or G750. 18K's precious metals are gold, of which 25%are other metals, and can be metals such as copper, aluminum, silver, cobalt, tadpoles, iron, cadmium, nickel. If a piece of 18K jewelry is made of gold and copper melting, then the copper burns inside will generate copper oxide and turn black.
18K gold may turn black after being burned by fire, because 18K gold contains 75%golden ingredients, and the remaining 25%are other precious metals, which will turn black after heating; It also depends on what metal metal is the other 25%of the other metal.
The is favored by jewelry artists due to the characteristics of 18K gold flexibility, easy shape, strong personality, strong personality, and expressiveness, and become the selection material for jewelry art.
The expansion information:
18k jewelry is yellow or white (determined by another 25%of the ingredients). The white 18K is usually called "platinum". 18K necklaces often include: 18K, AU750, G750 and other tags.
1K's gold content is 4.1667%, 18K is 18 × 4.1667%= 75%, that is, the gold content of "18K gold" is 75%. "18K Platinum" is the gold content of 75%, and the content of 钯 or nickel is 25%.
Reference information Source:
Baidu 100-family-18K gold
The surface was blackened. 18K gold is yellow in itself. Don't worry, take it to the local gold dots and renovate it!
If you want to distinguish 18K gold, this naked eye is difficult to distinguish. You need to distinguish it from the product label steel printing. Zhen 18K gold products are engraved with steel prints G18K, 18K or 750, and tag names are 18K gold; fake 18K gold steel prints are 18kgp or 18kgf, etc. The label is called alloy or 18K casting; It is to get a regular gold shop to test the other party with professional instruments.
18k golden fire does not necessarily turn black, which depends on what metal other alloys are.
The gold of our country: 99.6%(inclusive) is 24K. 18K is the golden ratio of 18, 18/24 = 0.75, which is 750 thousandths. Therefore, the mark of 18K gold is AU750, 18K or G750.
18K's precious metals are gold, of which 25%are other metals, and can be metals such as copper, aluminum, silver, cobalt, tadpoles, iron, cadmium, nickel.
If a piece of 18K jewelry is made of gold and copper melting, then the copper burns inside will generate copper oxide and turn black.