In the era of great development of this network, it receives every day a flood of information, the new word hot words after another, here and China Merchants jewelry Xiaobian a look at what it means pd990 and pd990 and pt990 What is the difference.
Pd990
Pd is an elemental symbol of palladium, palladium: Palladium: one of the platinum group elements, and 990 is the content of palladium, which is the same as the expression of pt990. So pd990 means that the metal palladium is 99.0% in your jewelry.
What is the difference between pd990 and pt990?
In addition to the one-letter difference between pd990 and pt990, the appearance is very similar, with a silver-white metallic luster and a bright color. Palladium has a specific gravity of 12, which is lighter than platinum and has a high ductility. Palladium has excellent physical and chemical properties, high temperature resistance, corrosion resistance, wear resistance and strong stretchability. It can be replaced with platinum in purity, rarity and durability, so they are two poles. Easy to make mistakes. But they still have differences, mainly the following points.
First of all, it is in terms of price and reserves. The content of palladium in nature is much more than that of platinum, so pd990 is about half cheaper than pt990.
Secondly, palladium is lighter in weight than platinum and has a lower density. The same volume of pd990 jewelry is much lighter than pt990 jewelry.
Then, from the texture point of view, palladium is light and brittle, and will become gray when placed in the air for a long time, and platinum will never have the above problems.
Finally, in terms of hedging, Platinum's ability to appreciate value is much stronger than that of palladium. Although the price of palladium used to exceed platinum for industrial demand, it has basically stabilized. As a hedge, it is still not as good as platinum jewelry. The main use of palladium is still in the industrial sector.
There is also a very important point, as the jewelry wear, but the palladium is too brittle, easy to break relative to platinum, not suitable as a small necklace and a small ring to avoid loss due to breakage. Platinum's stable nature and pure color make it a unique advantage for jewelry. So pt990 is still used for jewelry.
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