The history of discovery and use of precious metals dates back to centuries ago, when human race came to know about them. Over a period of time, the prices of these metals have been rising and many of them are being used for diverse purposes.
Here is the list of the top 10 most expensive metals:
The precious white metal indium, which is derived from zinc ore dispensation, combined with iron, lead and copper ores, is one of the most expensive metals. Discovered in 1863 by German scientists Richter and Reich, the metal was initially used in airplane engines, but is now employed for making corrosion resistant mirrors.
The glittering metal silver comes next on the list of 10 most expensive metals of 2015. It is available naturally in the ores of agentite and horn silver and is a product formed by smelting of gold, with China, Chile and Mexico being the major producers of this valuable metal.
The bluish silver colored metal called Osmium is another valuable metal, which was discovered long ago in 1803 by English scientists, William Hyde and Smithson Tennant. The fragile metal is related to the platinum group is found in abundance in North America, South America and Russia.
Another expensive metal on this list, whose discovery dates back to 1803, is palladium, which finds extensive use in electronics industry. basically, palladium is used for fusing metals as well as plating work.
One of the most expensive metals in the world is rhenium, which is also one of the densest and stands third in terms of high melting points, just after tungsten and carbon. A useful by product of manufacture of molybdenum, rhenium finds extensive use in manufacture of jet engine parts, thermocouples and filaments. The main producers of this metal are USA, Kazakhstan and Chile.