"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". Introduction K Jin's "K" is the preparation of the term "Karat". The complete notation is this: Karatgold (K gold), K gold is measured by: pure gold is 24K (ie 100% gold), 1K The gold content is about 4.166%. The method of calculating the gold content with "K" is based on a carob tree on the Mediterranean coast. The carob tree has a light red flower, and the pods are about 15 cm long. The beans are brown and can be made into glue. No matter where the tree grows, the size of the beans is exactly the same, so in ancient times, people used it as a standard for measuring weight. Over time, it becomes a unit of weight for measuring precious, subtle items. At that time, the measurement of diamonds and gold also used this unit, which is “Karatâ€. It was not until 1914 that "Karat" was stipulated as a standard internationally. Everyone understands the meaning and calculation method of K gold, so it is not difficult to know how many kinds of K gold, according to international standards, K gold is divided into 24 kinds, that is, IK to 24K. However, as the type of K gold used for jewelry, this is not the case, and the jewelry materials used in countries around the world are not less than 8K. In this way, there are actually 17 types of K gold that are actually counted as jewelry. Of the 17 K gold materials, 18K and 14K are the most used, and they are the main jewellery materials in the jewellery industry in various countries. In order to enrich the expressive power of various K gold, foreign countries adjust the ratio of other alloys to the same ratio, and synthesize K gold with different colors. According to the famous Japanese jewelry magazine "Gemstone Four Seasons", there are 450 kinds of gold in 2013, and the most commonly used are 20 kinds. For example, there are 6 kinds in 14K: red, red yellow, deep yellow, light yellow, dark yellow. , greenish yellow; there are 5 kinds in 18K: red, reddish, yellow, light yellow, dark yellow. Characteristics One of the characteristics of gold is its softness, so it is difficult to inlay a variety of exquisite styles, especially when it is inlaid with pearls, precious stones and jadeites. Therefore, people add a small amount of silver, copper, zinc and other metals to the gold to increase the strength and toughness of gold. The gold ornaments made in this way are also called K gold. K gold can be made into various colors according to needs. There are various colors of K gold jewelry popular in the world. Everyone has yellow and white. When gold is mixed with 25% palladium or nickel, it will become white, and the main component that makes up it is gold. This is called white gold. As far as the level of technology is concerned, it is not possible to extract pure gold materials with a purity of 100%. Therefore, the gold standard K indicating the pure gold content in gold products is generally referred to as pure gold as 24K gold, but it is theoretically only 100% gold, which does not exist. Therefore, in the national standard, the gold content of the merchant's gold jewelry should not use the "24K gold" non-standard standard method. Since the pure gold is 24K, that is, the theoretical gold content is 100%, 1K means that the gold product contains 1/24 of pure gold, about 4.16%. 18K gold represents 18/24 gold, which is 75% pure gold, and the rest are other materials such as silver or copper. As the saying goes, "Gold is not full of red, no one is perfect", and other gold ornaments contain other metals. For the quality of gold products, the national standard has a very clear regulation, that is, each piece of gold jewelry sold by the merchant must be listed to indicate its gold content and weight. The weight of gold jewelry is always subject to the national legal unit of measurement. The gold content should use “K gold†(excluding 24K gold), “foot gold†(with gold content not less than 99%), “thousands of gold†(including gold content not less than 99.9%), and “1000 foot pure gold†or “ Pure gold" and the standard method of "24K gold" which does not exist in practice. standard The gold content of each opening is (the national standard in brackets): 8k=8*4.166%=33.328%(333‰) 9k=9*4.166%=37.494%(375‰) 10k=10*4.166%=41.660%(417‰) 12k=12*4.166%=49.992%(500‰) 14k=14*4.166%=58.324%(583‰) 18k=18*4.166%=74.998%(750‰) 20k=20*4.166%=83.320%(833‰) 21k=21*4.166%=87.486%(875‰) 22k=22*4.166%=91.652%(916‰) 24k=24*4.166%=99.984%(999‰) note 24k gold is often considered to be pure gold, which is "100%", but the actual gold content is 99.99%, which is 23.988k. What does 18k gold mean? 18K" (or G750) jewelry refers to a pure gold content of 18/24, which is 75% of gold plus 25% of other metal alloys (such as silver, palladium, zinc, nickel, etc.) Jewelry. 18K gold jewelry not only has the precious value of gold, but also has the advantages of strong ductility, high hardness and variable color due to its perfect composition ratio. It can be used in jewelry design to make full play of complex and beautiful creative performance. What does 18k white gold mean? White K gold is impure gold. It is a white alloy made of gold and palladium or nickel, silver, copper, zinc and other metals. Its main component is still gold. Because white gold is white, it is the white metal that is most easily confused with platinum, but it is a completely different metal than platinum. The price of white gold is lower than that of platinum and gold, and it has been widely used in jewelry making. The materials are all pure 18K gold. Only platinum can be called platinum. So 18K Platinum is a wrong concept. Strictly speaking, it should be called 18K white gold. 18K white gold is a blend of 75% gold and 25% other metals. What does 18k rose gold mean? The composition of rose gold is: pure gold + copper + silver / zinc. Because of its moderate synthetic ratio, it has the characteristics of strong ductility, high hardness, and variable color. At the same time, it blends 25% of other metals. It has high hardness and is not easy to be deformed or scratched. It can be used in delicate and delicate gold decoration design. Bring intricate and beautiful design ideas. According to reports, K gold is extremely plastic, and the gold wire pulled out by modern technology is thinner than the human hair. Usually, rose gold is made up of 75% 18K gold and other alloys (commonly known as tri-color gold). The hardness is higher than that of pure gold. Compared with traditional gold and platinum, the pink rose gold not only makes the color of colored stones more intense, but also reflects the exquisite and delicate metal materials. It is also in a variety of styles, with a heart shape, a marquise shape, an oval shape, a pear shape, and an emerald shape. What does 18k gold mean? 18k gold refers to jewelry containing 75% gold, and the remaining 25% is other precious metals, engraved with 18K or 750 marks. . “K Gold†is the natural color of K gold itself, showing a yellow color; “K Platinum†is a white alloy of gold added with palladium or nickel, showing white; if copper is added, it is rose gold. The gold content of 1K is 4.1667%, and 18K is 18×4.1667%=75%, that is, the “18K gold†jewelry gold content is 75%. "18K Platinum" has a gold content of 75% and a palladium or nickel content of 25%. What does 18K color gold mean? 18K gold is a kind of 18K color gold, also an alloy, containing 75% gold, and 25% other metals. Due to the different ratios of different metal components, the color of the K gold jewelry in the gold series changes, and different colors such as purple red, red, pink, orange, green, blue, brown and black can be exhibited. Polo Shirt,Yarn Dyed Polo Shirts,Short Sleeve Polo Shirts,Knitted Polo Shirts SHAOXING SOYONG TRADING CO., LTD. , https://www.cn-soyong.com
K gold, white gold, rose gold