After buying thousands of money, there is no concept of 14K. Is it a kind of gold?
4 thoughts on “What is 14K gold, whether it will fade.”
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After buying thousands of money, there is no concept of 14K. Is it a kind of gold?
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14K gold is the gold content stipulated in my country's national standard GB 11887-2008 "Regulations on the Pigmentation of Jewelry Precious Metals and Name", which is also commonly known as "60%gold", which is the minimum boundaries of gold jewelry in people's minds.
k is a unit that determines the gold content in the gold jewelry. 14K gold indicates that the gold content in jewelry is 58.5%, 14K = 100%/24*14 = 58.333%. In order to facilitate the internationally, the gold content of 14K gold is generally 58.5%.
Generally without contact with corrosive items, it will not fade.
Extension information:
K number and gold content as follows:
24K, 99%or more; 22K, 91.7%; 21k, 87.5%; 18K, 75%; 14K, 58.5%; 12K, 50%; 10K, 41.66%; 9K, 37.5%; 8K, 33.34%; 6K, 25%.
Reference materials: Baidu Encyclopedia-Golden Jewelry
14K Gold 14K GOLD: my country's national standard GB 11887-2008 "Regulations on the Pureth of Jewelry Precious Metal and Name", which stipulates the gold content of ≥58.5%, is also commonly known as "60%gold". Essence
The because of its lighter color and foot gold, the gold jewelry made of it often needs to be plated again. After a long period of use, it will be discolored due to the surface plating of the surface. Use this jewelry.
Generally without contact with corrosive items, it will not fade.
The expansion information:
has many appraisal methods for gold jewelry. Chinese folk summarizes a set of simple methods. Its formula is: see color, weight, listening rhyme, folding hardness, stone grinding, contrast cards, use, use, use Sour, fixed into color. The first four sentences depends on the eyes and the feeling; the latter four sentences need to be used by tools and reagents.
The color
The different luster and color of gold can be generally distinguished from pure gold, K gold, real gold, and fake gold. That is, gold is better with red yellow, and the color is more than 95%; the positive yellow color is about 80%; the blue and yellow color is about 70%; the yellow color is slightly gray and the color is about 50%.
Therefore, there is a formula for "Seven Qing, Eight Yellow, Nine Five Chi, and Yellow Waves." For jewelry from Jiu Tibet, there will be a saying that "copper turns green, silver turns black, and gold will never change color".
The density
The density of gold is 19.32 grams/cubic centimeter, which is about double the same volume of silver, lead, and tin. Available formula: The mass (gram) of a certain gold jewelry (gram) is equal to density than the volume (cubic centimeter) of a certain gold jewelry (cubic centimeter).
In the density of the gold jewelry measured, about 19.32 grams/cubic centimeter, it is pure gold or better gold, otherwise it is a non -pure gold or color difference. To.
This hardness
Gold has the characteristics of ductility and small hardness, and can be pressed into thin pieces of 12.7 microns. When the color is high, marks can be left with large head needles or nails. More than 97%of the gold jewelry, after twirling two or three times, wrinkles appeared at the bend, also called fish scales.
95%of gold jewelry, it feels hard when bending, and the fish scales are not obvious; about 90%of gold jewelry, it is very hard when bending, without fish scales; Two or three times will be broken; if it is made for raw gold, the bend is broken, and the section has obvious sand granules.
This elasticity
When the high -quality gold jewelry is knocked out or threw it hard, it emits a dull sound of "dwelling, dwelling", and no sound, no elasticity, K gold has sound rhymes, there is sound rhyme, K gold has sound rhyme, there is sound rhyme, K gold has sound rhyme, there is sound rhyme, and there is a rhyme, and there is a rhyme, and there is a rhyme, and there is a rhyme. There are sound, elasticity, the greater the elasticity, the more the rhyme, the more old, the worse the color.
The test gold stones
It use gold -pairing cards (fixed gold medals) and test jewelery on the test gold stones. By comparing the color, the gold jewelry is determined. This method should be carried out under natural light and sunlight, and cannot be carried out under the direct sunlight and incandescent lamps.
In the acid point
Man the golden trail of the identified jewelry and the cards on the test stone, and test the nitric acid on the golden road with a glass stick. The color is unchanged. If it is not gold or non -pure gold, the Golden Road disappears or changes.
The law of changes is "three fast, three slows", that is, the low color disappears quickly, and the high color disappears slowly; Depending on the disappearance of its golden road, compare cards can determine the color of gold jewelry.
Reference information Source:
Baidu Encyclopedia — Golden Jewelry
Baidu Encyclopedia — 14K gold
14K gold is the gold content stipulated in my country's national standard GB 11887-2008 "Regulations on the Pigmentation of Jewelry Precious Metals and Name", which is also commonly known as "60%gold", which is the minimum boundaries of gold jewelry in people's minds.
k is a unit that determines the gold content in the gold jewelry. 14K gold indicates that the gold content in jewelry is 58.5%, 14K = 100%/24*14 = 58.333%. In order to facilitate the internationally, the gold content of 14K gold is generally 58.5%.
14k gold and the above ratio K gold will not change color. But if 14K gold does not pay attention, often contacting some acid -base chemicals. After wearing it for a long time, it will oxidize and discolor, because the gold content of 14K gold has a lot of gold, so it is golden, so it has been worn for a long time. It is not well maintained. Will be oxidized and yellow.
Extension information:
The 14K jewelry in the entire international trend has won fashion women. 14K gold, very plastic material, has a stronger hardness, so it can adapt to the design needs of various complex styles; it has richer colors, so it can show a more variety of colors, so as to have more fully expressive power , Carry more fashionable and creative shapes to meet the various personal needs of consumers.
14k gold is stable in normal nature and does not fade or deform, but like all valuable metals, you should also pay attention to maintenance and reasonable wear to maintain the stability of its shape and gloss. In order to avoid 14K oxidation and discoloration, we must first try to avoid contact with some pH chemicals. Stay away from those corrosive chemicals such as chlorine gas and cleaning agent. Secondly, pay attention to reasonable matching, reduce daily wear, bumps and other damage, and prolong the color life of gold.
Reference information Source:
Baidu 100-family-14K gold
Many stores on the street are selling 9K and 14K jewelry, especially in Korea. So, what is 14K gold?
The gold jewelry can be divided into two categories: pure gold and K gold.
The gold jewelry has a gold content of more than 99%, up to 99.99%, so it is also known as "nine nine gold", "full gold", and "red gold".
K gold jewelery is a jewelry made of other metals (such as silver and copper metals) to its golden materials, also known as "opening gold" and "color gold". Due to the number of other metals, different K numbers of K gold jewelry are formed. K数的大小与含金量如下： rn 24K，99%以上；22K，91.7%；21K，87.5%；18K，75%；14K，58.5%；12K，50%；10K，41.66%；9K， 37.5% 8K, 33.34% 6K, 25%
K gold can be prepared into various colors as needed. The popular K gold jewelry internationally has various colors. Everyone is yellow and white and rose gold.
14K gold is cheap because of the price, which can be changed often, and there are grades. So more popular.