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The application of platinum could be used in vary ways of aspect but not only in jewelry industry

The platinum with a chemical symbol PT is a sort of precious metal which is classified as a raw material for fine jewelry. Platinum was discovered for centuries ago, it refer to the appearance in 1557 in the writings as a description of an unknown noble metal and became famous in the year of 1920s, it was also known as white gold at that time. As a pure metal, it deserved as a silver white, ductile, and malleable but it does not oxidize at any temperature. It can’t be deny that platinum’s resistance to wear and tarnish is well suited for making fine jewelry, it is also important for the using of industrial application since it has an excellent resistance to corrosion and high temperature and has stable electrical properties.

Platinum is obtained commercially as a by-product from nickel and copper mining and processing. During electrorefining of copper, noble metals, such as silver, gold and the platinum group metals, as well as selenium and tellurium, settle to the bottom of the cell as "anode mud", which forms the starting point for the extraction of the platinum group metals.

The purification methods apply for pure platinum is using to isolate from them by various methods of subtracting impurities. Because platinum is significantly denser than many of its impurities, the lighter impurities can be removed by simply floating them away in a liquid. Besides that , it is also nonmagnetic, while nickel and iron are both magnetic. These two impurities are thus removed by running an electromagnet over the mixture. Because platinum has a higher melting point than most other substances, many impurities can be burned or melted away without melting the platinum. Finally, platinum is resistant to hydrochloric and sulfuric acids, while other substances are not. Metal impurities can be removed by stirring the mixture in either of the two acids and recovering the remaining platinum.

Platinum can widely apply in vary ways but not only in jewelry aspects, it could be used for the vehicle emissions control devices, jewelry, electronics, chemical industry as a catalyst as well as some minor applications, such as electrodes, anticancer drugs, oxygen sensors, spark plugs and turbine engines as well.  During periods of sustained economic stability and growth, the price of platinum tends to be as much as twice the price of gold, whereas during periods of economic uncertainty, the price of platinum tends to decrease only because to the decline of industrial demand, falling below the price of gold. Gold prices are more stable in slow economic times, as gold is considered a safe haven and gold demand is not driven by industrial uses.

Platinum jewelry is now popularly purchase through the wholesale jewelry findings; it is normally a good raw material for all kinds of jewelry, such as diamond jewelry, pearl jewelry which have very good appearance in different styles and designs.

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