There are many precious metal ornaments on the market, but how to buy it often makes people worry, so learn more about metal jewelry to buy small common sense.
First, we need to distinguish between white gold and platinum. It is customary in the market to call white 18K gold "18K white gold". This is a name that is easily confused with platinum jewelry, and there are many misunderstandings and disputes. In addition to 750 ‰ gold in 18K gold, different proportions of other ingredients will make K gold appear different colors, such as red K gold, yellow K gold, white K gold and so on. Although the color of white gold is white, it is a gold jewelry that is uncompromising. The main component of its precious metal is gold (Au). The white gold jewelry on the market is mostly gold, copper, nickel and zinc alloy. "Platinum" is a common name for platinum. It is a platinum jewelry. Its appearance is also white and pleasing to the eye. The main component of its precious metal is platinum (Pt). According to China's national standards, there is no K-platinum, so the so-called "K Platinum" and "K Platinum" are incorrect.
Second, platinum and palladium jewelry should not be confused. According to the needs of the market, since 2004, some jewelry manufacturers have developed palladium jewelry made of another platinum group metal-palladium matrix material, except for the density of palladium (12.03g/cm3) than platinum (21.45g/cm3). ) It is much lighter, and its color, hardness and other characteristics are similar to those of platinum jewelry. Consumers should pay special attention to the mark on the jewelry: the material of platinum jewelry is “Platinum†or “Ptâ€, and the material of palladium jewelry is “Palladium†or “Pdâ€. Do not confuse platinum jewelry with palladium jewelry. .
Third, the imprint of the jewelry must be carefully observed. According to the relevant national standards, the imprint refers to the logo of the manufacturer's code, purity, materials and the quality of the diamond-encrusted diamond (0.10 carat or more) printed on the precious metal jewelry by mechanical tapping or laser engraving. Jewelry imprints should be accurate, clear and easy to identify. The “manufacturer code†in the imprint refers to the code of the precious metal jewelry manufacturer or distributor. The manufacturer code can be composed of letters, numbers or Chinese characters and their combinations. It must be registered at the China National Arts and Crafts Association Jewelry Imprint Management Center. The "material" and "purity" in the imprint must be marked in accordance with the provisions of the national standards, such as the "thousands of gold" of gold jewelry (gold content is not less than 999 baht), "foot gold" (gold content is not less than 990 ‰), "G18K" (gold content not less than 750 ‰); silver jewelry "foot silver" (silver content not less than 990 ‰), "S925" (silver content not less than 925 ‰); platinum jewelry "foot platinum" (Platinum content not less than 990 ‰), "Pt950" (platinum content not less than 950 ‰), "Pt900" (platinum content not less than 900 ‰); palladium jewelry "Pd950" (palladium content not less than 950 ‰) )Wait. The imprint "18KGP" means that gold-plated jewelry is not a precious metal jewelry, consumers should pay special attention when purchasing.
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