1 thought on “How is gold and silver classified”

  1. There are many classifications of gold and silver jewelry. Some are divided by composition, some are classified according to form, some are classified by processing process, and there are classifications according to use. Of course, there are classifications such as the times and styles.
    . ingredient classification
    Gold and silver jewelry can be divided into three categories according to the types of precious metals: gold jewelry, silver jewelry, platinum jewelry. Each category is divided into several small categories.
    1. Gold jewelry
    (1) Foot gold jewelry
    The jewelry made of 990 ‰ of gold. The color of the foot gold is 999 ‰, which is called the thousands of gold, which is the highest in foot gold jewelry.
    The gold jewelry sold on some markets is "9999", which is actually a deception to consumers. As the saying goes, "Gold has no redness and no one is perfect". Among the national standards of gold, the color 9999 is the highest color. Even if the gold material of 9999 is made to make jewelry, the color of the finished jewelry must be less than 9999, not to mention The highest color of jewelry (GB/T 11887-2000) is 999 (ie thousands of gold), and which company will process 9999 percent finished jewelry.
    The "Xinyi" foot gold jewelry is not less than 992, and the mark "Foot gold". The color of "Xinyi" thousands of gold jewelry is 999, and the mark "Thousands of Gold", which is the highest color of Xinyi Jewelry.
    (2) K gold jewelry
    This divide the color of pure gold into 24 parts, each marked to 1k, 24k gold is pure gold. The color of 18K gold is 18/24, that is, 750 ‰, and the color of 9K is 375 ‰.
    Theoretically, the color of 24K gold should be 1000 ‰, but it is usually not appropriate to refer to the sufficient gold or thousands of gold as 24K gold. However, it should be clear that the so -called "foot gold" is unintentionally added to the non -gold component supplement, and the K gold jewelery is to add different components to make up for different ingredients to achieve changes in hardness and color. Therefore, in order to distinguish this, the gold that is interested in adding the mouth is usually called K gold.
    K gold classification is generally divided into 22K, 18K, 14K, 9K. Although the gold content of K gold with a color is uniform, its repayment formula is not exactly the same, and the color of the alloy is also different. "Xinyi" jewelry mainly produces yellow 18K gold and white 18K gold jewelry. These are also two popular K gold jewelry in China.
    2. Silver jewelry
    (1) Fetal silver jewelry
    for color 990. The surface is smooth, silver -white, good ductility, and looks elegant and generous.
    (2) Silver alloy jewelry
    is usually 925, and people call it "standard silver". The surface is bright, there are still silver white, the hardness and ductility are moderate, easy to process, it looks exquisite, delicate, and very decorative. The color of "Xinyi" silver jewelry and silver products is 950.
    of course, there are also silver jewelry with lower silver content, especially some national -style jewelry, which are very beautiful and delicate.
    3. Platinum jewelry
    Platinum jewelry refers to jewelry processed by platinum elements. Considering the requirements of processing process, the content of platinum is usually 900, the so -called PT900, and other ingredients are 钯 and other elements.
    Thenic jewelry standards stipulate that the content of platinum and pupa should not be less than 950 in the composition of PT900 platinum jewelry. With the continuous rise in the price of gold in the international precious metal market, the price of gold has increased from the original price below platinum to higher than platinum prices. Therefore, in order to reduce the cost of jewelry manufacturing, At present, PT950's platinum jewelry has appeared.
    . Classification of morphology
    Gold and silver jewelry can be divided into many types according to the form classification. Earrings, earrings, buns, buns, hairpins, etc.
    2, neck decoration
    mainly includes necklaces, collar, long -life locks, various string decorations, etc.
    3, hand decoration
    mainly include bracelets, bracelets, rings, etc.
    4, chest, waist ornaments
    mainly include brooch, gold and silver, tie clip, clip clip, etc.
    5. Foot decoration
    mainly includes ankle bracelets, ankle chains, toe rings, etc.
    . Processing process classification
    Machinery processing includes mechanical manufacturing, mechanical forging, welding, mechanical polishing;
    may processing includes handmade molding, mechanical forging, mechanical welding, manual polishing;
    The handmade processing class includes handmade molding, handmade forging hammer, and hand -polished.
    The above three processes. The handicraft process is the foundation and is a necessary process ingredient for each factory. The amount of mechanical processing content reflects the level of productivity of a jewelry processing enterprise. The processing of "Xinyi" jewelry uses international advanced jewelry processing equipment and production methods, which has considerable scientific and technological content.

    The above three are commonly used classification methods, especially according to component classification, the most widely used.

    . Classification of use
    The gold and silver accessories such as practicality, artistic, commemorative, traditional and alignment can be divided into use.

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