1. pd refers to palladium. pd is the exclusive element symbol for palladium, which is one of the platinum group elements.

2. Palladium is one of the rarest precious metals in the world. Its element symbol is Pd and it is one of the platinum group elements. Palladium is extremely pure and looks similar to platinum. In its natural state, it has a silver-white metallic luster that will never fade. Palladium is resistant to high temperatures, corrosion, wear and tear, and is ductile. In terms of purity, rarity and durability, it can be substituted with platinum and is an ideal material for making jewelry and inlaying gemstones. Palladium, along with platinum, gold and silver, is one of the international precious metal spot and futures trading varieties. Historically, it was once higher than platinum in price.