Palladium is one of the rarest precious metals in the world, and the element symbol Pd is one of the platinum group elements. Palladium has high purity, similar appearance to platinum, silvery white metallic luster in natural state and never fades. Palladium has high temperature resistance, corrosion resistance, wear resistance and ductility. In terms of purity, rarity and durability, platinum can be used instead, which is an ideal material for making jewelry and inlaid gems. Palladium, together with platinum, gold and silver, is one of the international precious metal spot and futures trading varieties, which was once higher than platinum in history.

In addition, palladium is also a widely used catalyst, from petrochemical industry to medical treatment, from automobiles to watches.

Extended data:

Palladium has a natural pure white luster like platinum, and its color is bright. It also looks like platinum, but compared with platinum, the price of palladium is lower. Because palladium has some unique physical and chemical characteristics, it is more difficult to process jewelry than platinum, and the requirements for all links are very high.

Palladium is not easy to oxidize and lose its luster at room temperature. When the temperature is about 400℃, oxides will be produced on the surface. When heated to 800℃ in room temperature air and humid environment, palladium oxide film will be formed on the surface of palladium.

Baidu encyclopedia-palladium