What are the English letters in front of the thousands of gold?
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What are the English letters in front of the thousands of gold?
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G (gold).
The gold content is not less than 999, which is called thousands of gold. The mark is thousands of gold, 999 gold, GOLD999 or G999. The mark of gold jewelry includes manufacturers' code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc.
Among them, the letters X are the manufacturer code. When making jewelry with different materials or different purifications, materials and purity should be represented separately. When the jewelry cannot be printed due to too thin or too small, it should be attached to the logo containing the mark content.
The expansion information:
Thousand -footed gold physical properties
Gelish: red yellow, with a color of more than 95%; positive yellow, colorfulness of about 80%; cyan yellow, about 70%; Yellow is slightly gray, about 50%.
Densive: 19.32g/cm3
Hardness: Mo's hardness 2.5, which is similar to human nails.
Crystal structure: Facial cube structure
Atomic measurement: 196.96654
The shell structure: 2,8,18,32,18,1
Electronic discharge: [XE] 4F14 5D10 6S1
The composite price: 1,3
melting point: 1064.43 ℃
boiling point: 2808 ℃
Electricity: 2.54
: 0.85 ( 3) a
Atomic radius: 1.79a
Reference materials: Baidu Encyclopedia-Thousands of Gold
G (gold).
The gold content is not less than 999, which is called thousands of gold. The mark is thousands of gold, 999 gold, GOLD999 or G999. The mark of gold jewelry includes manufacturers' code, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc.
Among them, the letters X are the manufacturer code. When making jewelry with different materials or different purifications, materials and purity should be represented separately. When the jewelry cannot be printed due to too thin or too small, it should be attached to the logo containing the mark content.
The expansion information:
The difference between foot gold and thousands of foot gold:
1. The biggest difference between foot gold and thousands of gold is the gold content between them. Gold is a division of gold content level. In terms of literal definition, thousands of gold must be full gold, and foot gold is not necessarily a thousand foot gold.
2, the gold with low content is represented by numbers as K gold, such as 9K gold's gold content is not less than 375 ‰, 14k gold's gold content is not less than 585 ‰, and the gold content of 18K gold is not less than 750 ‰ The gold content of 22K gold is not less than 916 ‰.
3, the gold content of thousands of gold is 0.9 ‰ more than the gold content of sufficient gold. Most of the thousand -foot gold products on the market have been single, otherwise the purity will not reach the standard.
Reference information Source: Baidu Encyclopedia-Thousands of Gold
Thousands of gold: The amount of gold content is not less than 999, which is called thousands of gold, which is the highest value of jewelry named names. The mark is thousands of gold, 999 gold, GOLD999 or G999.
The foot gold: The gold content is not less than 990. The mark is "Foot Gold", "990 Gold", "GOLD990" or "G990".
The purchase of gold jewelry should first recognize the quality inspection logo of gold jewelry. Most of the gold jewelry sold in the market is equipped with inspection signs from quality inspection institutions, which clearly marked the gold content and weight of the jewelry. 999 gold is also called thousands of gold, and the gold content is not less than 999 ‰; 990 gold is called sufficient gold, and the gold content is not less than 990 ‰; the gold content of 22K gold is not less than 916 ‰; the gold content of 18K gold is not less than 750 ‰ ; The gold content of 14K gold is not less than 585 ‰; the gold content of 9K gold is not less than 375 ‰.
The reminding consumers is that the color of 18K gold jewelry is yellow, white, red and other colors. White 18K gold is alloy of gold and nickel, zinc, silver, copper and other elements. White K gold jewelry is not a platinum (platinum) product.
The mark of gold jewelry includes manufacturer codes, materials and purity, such as: X Gold 990, XAU990, X -foot gold, etc. Among them, letters X are the manufacturer code. When making jewelry with different materials or different purifications, materials and purity should be represented separately. When the jewelry cannot be printed due to too thin or too small, it should be attached to the logo containing the mark content