Palladium Pd is a new precious metal, and the following "950" indicates that the content of Pd in this metal is 95%, just as Pt950 indicates that it contains 95% platinum. Although the density and luster of palladium are not as good as platinum, its chemical stability is the highest among all precious metals. Palladium is a member of the platinum group, a precious metal in platinum group metals, and the international imprint of palladium jewelry is Pd or palladium. Palladium is relatively stable, can resist acid corrosion, and is not easy to oxidize and lose luster under normal circumstances. Palladium has almost no impurities and high purity, which is very suitable for skin and jewelry. The international jewelry industry began to process palladium and platinum as components of gold, silver and platinum alloys to increase their hardness, and gradually formed a fashion trend. Pd, like Pt, is one of the rarest precious metals in the world. Palladium, extremely rare, with high purity, presents silvery metallic luster in the natural state, does not fade due to oxidation, has extremely high hardness and strong ductility, and is suitable for setting gems. Palladium and platinum belong to the same element family, both of which are white rare precious metals. In the natural state, it has a silver metallic luster, does not fade, has strong ductility, and is not easy to oxidize and lose luster under normal circumstances. Palladium jewelry with extremely high hardness is not easy to deform when worn, and is more suitable for setting gems.