Precious metal jewellery (including platinum, gold, etc.) occupies a very important position in the jewelry family with its fascinating color and value preservation function. And all kinds of simulated jewelry (including forging gold, gold, etc.) with the color of its precious metals, affordable and affordable consumption, has been favored by people.
Simulated jewellery is sometimes faked by unscrupulous traders, posing as precious metal jewellery. However, the difference in value between the two is very different. If you pay close attention, you will find different marks on the inner or reverse side of each type of jewellery. Explain the type of jewelry, and also tell everyone the quality of jewelry.
pure gold
Refers to the gold content of not less than 990, playing the "gold", "gold990" or "g990" mark.
k gold
Generally refers to precious metal jewelry with a gold content from 8k to 24k (1k = 4.1666...%). Marked as 24k, 18k, 9k or 750 (ie gold content 75%, also known as 18k), 583 (gold content 58.3%, equivalent to 14k).
In order to meet the needs of consumers, the merchants also developed and produced "color gold" in various colors. The gold is matched with various other metals such as aluminum, silver, cadmium and palladium in gold, which makes the jewelry appear purple, pink, blue, green and gray. The winnings are k gold. As we usually see 18k white gold, people tend to think of platinum. In fact, 18k white gold is 75% gold, 10% silver, 10% zinc, 5% white gold, Hong Kong and Macao is also called " Dacheng k Platinum, or "33 thousand gold", because the appearance is similar to platinum jewelry, people are often confused, as long as you carefully observe the mark, it is not difficult to separate the two.
Platinum
The platinum content is not less than 990, and it is marked with “foot platinum†or “pt990â€.
950 platinum
The platinum content is not less than 950, and it is marked with "Platinum 950" or "pt950".
900 platinum
The platinum content is not less than 900, and it is marked with "Platinum 900" or "pt900".
850 white gold
The platinum content is not less than 850, and the platinum 850 or "pt850" mark is used.
Other substances in platinum jewelry are mainly their common element palladium (pb), such as pt900, which represents 90% platinum, 10% palladium, and so on. Platinum content in platinum jewelry is generally not less than 85%.
The color of silver jewelry is also expressed in thousands of silver content.
Full silver
The silver content is not less than 990, and the “foot silver†mark is used or marked according to the actual content.
925 silver
The silver content is not less than 925, and the "silver 925" or "s925" mark is used.
Gold plating
It is based on the principle of electrolysis to coat a very thin layer of gold on the surface of jewelry made of silver or copper. The thickness of the gold plating layer in China is not less than 0.5um, even if the thin layer is gold-plated, it is more than 0.05um. Marked as "gp" or "kp".
Gild
The gold foil is wrapped on the surface of a metal material such as silver or copper, and the gold foil is required to have a color formation of not less than 10 k and a weight of not less than 1/20 of the total weight of the material, which is usually expressed by kf.
Forging gold
Essentially belonging to the gold, the gold foil is forged on the surface of other metal jewelry blanks under high temperature and high pressure conditions. The color requirement of gold foil is greater than 10k, and the total amount of k-gold forging is not less than 5% of the finished product. It is marked as “gf†or “kgfâ€. The surface of forging gold has strong hardness and high wear resistance, and it is not easy to lose the golden texture.
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