"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" on the Chinese market
"Gold", its gold content is 18 × 4.1666 = 75%, the mark on the jewelry should be marked "18K" or "750".
K Jin’s “K†is the pronunciation of the term “Karatâ€. The complete notation is this: Karat gold (K gold),
The measurement method of K gold is: pure gold is 24K (that is, 100% gold content), and gold content of 1K 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, 1K 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. Gold mixed with 25% palladium or nickel will become white, and the main component that makes up it is gold. This is called white gold.
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.
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 white 18k 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. Bringing intricate and exquisite design ideas, thousands of gold will withdraw from the historical stage.
Rayon Dyed With Embroidery,Viscose Dyed Fabrics,Dyed Embroidery Fabrics,Children Dress Fabrics
SHAOXING YINGSIPE TEXTILE CO.,LTD , https://www.chinayingsipei.com