I believe that many consumers have thought of this problem when purchasing platinum jewelry. The purity of platinum often represents the value of platinum. Generally speaking, the higher the purity of platinum, the higher the value. How to identify the purity of platinum?
The state stipulates that only jewellery with a platinum content of 85% or more can be called platinum jewellery and must carry the Pt logo, but this also means that platinum jewellery of any purity can be called “platinumâ€, but the actual purchase of platinum When jewellery is found, the value of platinum jewellery with different gold content is different. The higher the purity of platinum, the higher its value.
How to distinguish purity in platinum
According to national regulations, each piece of platinum jewelry must be engraved with platinum, platinum, platinum or Pt logo, and must be marked with platinum purity such as platinum Pt900, platinum Pt950, foot platinum Pt990, and thousand platinum Pt999. This is the official mark to distinguish the purity of platinum.
Thousands of platinum Pt999: represents a platinum content of 999 ‰.
Foot Platinum Pt990: Platinum content is not less than 990, playing "foot platinum" or "Pt990" mark, indicating that the percentage of platinum in the jewelry is 99%.
Platinum Pt950: Platinum content of not less than 950, playing "Platinum 950" or "Pt950" mark, indicating that the percentage of platinum in the jewelry is 95%.
Platinum Pt900: Platinum content of not less than 900, playing the "Platinum 900" or "Pt900" mark, indicating that the percentage of platinum in the jewelry is 90%.
The purity of platinum is different. The higher the purity of platinum, the softer the texture and the easier it is to deform. To increase the hardness, a certain proportion of precious metals such as palladium, ruthenium and iridium must be added when forming platinum jewelry. Among them, 950 platinum contains 5%, palladium, rhodium and ruthenium. The hardness is not very high. It is usually used to make some pure platinum jewelry. And 900 platinum contains 10% palladium, rhodium and ruthenium. The hardness is slightly higher. It can be used to set precious stones such as diamonds. 950 platinum can also be set with diamonds, but it is best to have diamonds of no more than 50 points.
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