Palladium, one of the most expensive of the precious metals, is a soft silver/white precious metal that looks very similar to platinum. It is the least dense and has the lowest melting point of all of the platinum group (ruthenium, rhodium, palladium, osmium, iridium and platinum) metals.
Palladium itself has been used as a precious metal in jewelry since 1939, as an alternative to platinum or white gold. While known as a common element for jewlery, only 14% of the total worldwide palladium demand is used for jewlery. Over half of the supply of palladium goes into catalytic converters for cars and trucks. The other common uses of Palladium include dentistry, medicine, hydrogen purification, chemical applications, groundwater treatment, and it plays a key role in the technology used for fuel cells.
Unlike Gold, Silver and even Platinum; not dependent on the fickle demand of the jewlery business Palladium has a solid base of industrial uses which makes it a very secure investment.