"AU" is a symbol used internationally to indicate the purity of gold (ie, gold content). K gold (or gold) is an alloy of gold and other metals. K gold jewelry is characterized by low gold content, low cost, and can be made into various colors, and is not easily deformed and worn. K gold is divided into 24K gold, 22K gold, 18K gold, 9K gold, etc. according to the amount of gold. The most common "18K gold" in China's market, its gold content is 18 × 4.1666 = 75%, the mark on the jewelry should be "18K" or "750". K Jin's "K" is the preparation of the term "Karat". The complete notation is this: Karat gold (K gold), K gold is measured by: pure gold is 24K (ie 100% gold), The gold content of 1K is about 4.166%. What is the difference between 18K gold and 24K gold? 18K gold and 24K gold are the most widely used in jewellery. Many people will confuse 18K gold and 24K gold. In fact, 18K gold and 24K are different. 24K gold refers to 99% pure gold. At present, the market is occasionally marked with 24K gold jewelry. According to national standards, the theoretical value of 24K gold content should be 100%, but gold is not barefoot. Therefore, in the strict sense, 24K does not exist. It is not correct to sell 24K gold. Does not meet national standards. 18K gold, which means 75% gold plus 25% silver and copper, with yellow, white or red as the ratio of silver to copper is different. And 18K white gold, because of the large proportion of silver, it appears white, commonly known as 18K white gold. There are many colors of K gold, usually yellow, red and white. Among them, white gold is actually an alloy of gold and nickel, zinc, copper and other elements. It is not what is commonly called a platinum jewelry. All in all, the 24K gold is relatively soft, so there is a certain difficulty in the shape, the style is limited, but it can be preserved. 18K gold is high in hardness, suitable for styling and inlaying. It has more styles and is more fashionable, but it does not preserve value. Price difference: the gold content is definitely 24K more expensive than 18K gold. However, due to the high hardness of 18K gold, the processing difficulty is relatively high, and the natural processing fee is high. Therefore, it is natural to encounter 18K gold than 24K gold. What is the difference between 24K gold and 3D thousand hard gold? 24K and 3D hard gold are all thousands of gold in jewellery. The hardness of 3D hard gold is 4 times that of ordinary thousand gold. The purity is still the purity of thousands of gold. 3D hard thousand gold is produced by a special process. Simply put, the ionic structure of gold is destroyed during the production process, so that the hardness becomes higher, and its gold content is of course thousands of gold. The advantage of 3D hard thousand gold is that the weight is relatively light and the display is relatively large. Relatively more styles, more novel; the disadvantage is that it is expensive (mainly including the cost of the process), can not participate in the old-for-new, does not have the function of value-preserving stored value, can only be worn as jewelry. Zhou Dafu, Zhou Shengsheng, etc., are all sold at a price, and of course they cannot be measured by the price of gold. What is the difference between 14K gold and 18K gold? From the above introduction of K gold, we can know that the gold content of 14K gold = 58.5%, the gold of 18K gold = 75%. The difference between 14k gold and 18k gold is the difference in gold content. The higher the content, the softer it is. The lower the hardness, the harder it is. Therefore, the K gold used for setting stones is basically 18K gold and 14K gold. In China, 18K gold is generally used, while foreign countries prefer 14K gold. For particularly complex styles it is recommended to use 14K gold because it is more stable. In general, the price of 14K gold is relatively cheap in precious metals, the texture is relatively hard, and it is not easy to rust and is not easy to corrode. 18K gold and 14K gold are also more suitable for people's craftsmanship, creating more fashion styles that are loved by young people. In general, people from the traditional and value-for-money tend to choose 24k gold, while modern young people, who focus on fashion and style, are inclined to 14k gold jewelry, because its shape is rich and novel, it can fully satisfy people. Personality needs. Use "k gold" to indicate the purity of gold The "K gold" means that the yellow pure gold jewelry is usually divided into full gold and K gold. K (open) gold refers to the alloy of gold and silver, copper and other metals in a certain proportion. "K" is a symbol used internationally to indicate the purity of gold (ie, gold content). In general, the more K gold contains silver, the more green the color. If the proportion of copper is large, the color is purple. In theory, we refer to 100% gold as 24K (24K gold is often considered pure gold, the composition is 100%, but the actual content is 99.99%, which is 23.988K); the calculation method is 100/24. National standard: National standard GB11887-89 stipulates that every K (English carat, German karat abbreviation, often written "K") gold content is 4.166666%, China's K gold in the early days of New China is 4.15% per K pure gold The standard calculations, after 1982, have been unified with international standards, with a gold content of 4.166% per K. Method for calculating K gold color Color = K to X4.166% 8K=8X4.166%=33.328% (The gold content is 33.3%, and the national standard is 333‰) 9K=9X4.166%=37.494% (The gold content is 37.5%, and the national standard is 375‰) 10K=10X4.166%=41.660% (The gold content is 41.7%, and the national standard is 417‰) 12K=12X4.166%=49.992% (The gold content is 50%, and the national standard is 500‰) 14K=14X4.166%=58.324% (The gold content is 58.3%, and the national standard is 583‰) 18K=18X4.166%=74.998% (The gold content is 75%, and the national standard is 750‰) 20K=20X4.166%=83.320% (The gold content is 83.3%, and the national standard is 833‰) 21K=21X4.166%=87.486% (The gold content is 87.5%, and the national standard is 875‰) 22K=22X4.166%=91.652% (The gold content is 91.6%, and the national standard is 916‰) 24K=24X4.166%=99.984% (The gold content is 99.9%, and the national standard is 999‰) The K gold traded on the market is mostly 24K gold, 22K gold, 18K gold, 14K gold and so on. In theory, 100% of gold can be called 24K gold, but in reality it is impossible to have 100% gold, so China stipulates that gold with a content of 99.6% or more (including 99.6%) can be called 24K gold. The K gold content is the general specification of jewelry, and the national gold jewelry with a minimum of 9K cannot be called gold jewelry. Express the purity of gold in words Some gold jewellery is marked with a text mark. The stipulation is that the gold content of the gold is not less than 990 ‰, and the gold content of the thousand gold is more than 999 ‰. It is usually a representation that divides the weight of gold into 100 parts. For example, if the gold content is 9999, the gold content is 99.99% (999.9‰), and the gold content marked 586 is 58.6% (586‰). The gold traded on the Shanghai Gold Exchange is mainly 9999 and 9999 gold. China has regulations on gold product imprints and signage. Generally, it requires production company code, material name, content mark, etc., and no mark is unqualified. The same is true internationally. However, for some particularly small products, it is also allowed to mark. Express gold purity with Arabic numerals For example, 99 gold means "full gold" and 9 gold means "thousands of gold." However, from May 4 this year, the title of the thousand-foot gold that has been used for 14 years will be canceled, and the gold jewelry will be unified in the form of full gold, and the nominal content. Use gold to indicate gold purity For example, it is labeled 18/24, that is, the color is 18K (750 ‰); it is labeled 22/24, that is, the color is 22K (916 ‰). For example, it is labeled 18/24, that is, the color is 18K (750 ‰); it is labeled 22/24, that is, the color is 22K (916 ‰). Gold calculation method 1 carat = 0.2 g 1 troy ounce = 31.1035 grams 1 Hong Kong two = 37.429 grams 1 inch = 25.4 mm 1 carat = 100 points 1 troy ounce = 480.0000 gel 1 money = 3.743 g 1 inch = 2.54 cm 1 gram = 5 carats 1 drag = 0.375 troy ounces (Mainland) 1 two = 31.25 grams 1 mm=0.03937 inches 1 gram = 20 gram 1 constant ounce = 28.3495 grams 1 money = 3.125 g 1 cm = 0.3937 inches 1 Zhuke = 0.25 carat 1 constant ounces = 0.911458 troy ounces 1 silver dollar = 23.4375 grams 1 Zhuke = 0.05 g 24K=100% gold 22K=91.67% gold 20K=83.33% gold 18K=75% gold 14K=58.5% gold 12K=50% gold 10K=42% gold 9K=37.5% gold 8k=33.5% gold Plus Size Clothing,Cotton Knitted Dress,Plus Sizes Dress Office,Comfortable Breathable Sweater SHAOXING LIDONG TRADING CO.,LTD , https://www.suejiangarments.com
