Palladium is likely the least-known of the four major precious metals. Although the top online precious metals dealers offer it and, in some cases, keep its pricing continuously updated at the top of each page, it often gets overlooked in favor of gold, silver, and platinum.
In fact, palladium is part of the platinum metals group within the periodic table. Thus, it shares many of the same characteristics, both in appearance and in use, as platinum. It is also used heavily in industrial applications, much like platinum and silver.
What palladium offers to many of these companies is its elemental properties. Like silver and platinum, palladium is reflective and reasonably conductive (though not as conductive as silver or gold). At the same time, it resists corrosion and wear very effectively, making it a strong choice for long-term use.
Long story short, palladium may offer a bit of flavor to your precious metals investment that you haven’t had before. So, let’s cover the ways that palladium benefits various industries and why you might consider adding a bit of it to your portfolio.
One of the major applications of palladium is as a catalyst in the catalytic converters used on gasoline-powered vehicles. These devices reduce emissions by converting some of the more toxic gases produced by internal combustion engines, such as carbon monoxide and nitrogen oxides, into less harmful gases, such as carbon dioxide and nitrogen.
Though palladium is a metal, it is also quite biocompatible—meaning that it can exist alongside our bodies’ structures without being toxic. Historically used in dental alloys, its inertness and durability made it ideal for use in appliances that required structure and safety. Today, however, its use is less common due to cost and evolving material preferences.
Another of palladium’s elemental properties is that it is an exceptionally efficient purifier and absorber of hydrogen. A block of palladium can effectively filter hydrogen from a mixed gas and store a considerable amount of hydrogen relative to its mass. This capacity makes palladium useful in hydrogen-processing systems for fuel cell technology, although platinum is more commonly used as the primary catalyst in the fuel cells themselves.
Like many metals, palladium is electrically conductive, which makes it useful in the electronics industry. While it is not as conductive as gold, it is also less expensive, and many companies—including those that make electronic connectors and capacitors—use palladium as a viable substitute where high conductivity is not critical.
One of the biggest challenges in treating groundwater is the presence of highly chlorinated solvents. Palladium’s ability to work with hydrogen allows it to aid in processes where chlorine atoms can be replaced with hydrogen, thereby reducing toxicity. These systems are specialized and typically used in advanced treatment settings.
Pharmaceutical researchers often use palladium-based catalysts in hydrogenation and organic chemical synthesis processes. Hydrogen helps break down or rearrange carbon-bearing compounds—an essential step in producing various medicines and chemical compounds.
Palladium is a valuable alloying agent for other metals. Where materials like gold, silver, or titanium might struggle with oxidation or structural weakness, palladium can help reduce corrosion and stabilize the alloy without compromising the base metal’s intended properties.
Though less common, jewelers do offer products that use palladium in place of silver or white gold. Palladium is naturally hypoallergenic and maintains its silvery color without rhodium plating. While lighter than platinum, it is generally softer and more prone to scratching, yet still an attractive option for rings and necklaces.
Palladium may never shake its reputation as the overlooked precious metal. It isn’t gold, of course, and its slightly darker luster may affect its appeal for jewelry-making or as a traditional precious-metal investment vehicle.
However, its widespread industrial use means its price history often reflects broader macroeconomic conditions, as industrial demand tends to fall during economic slowdowns. As such, adding palladium to your portfolio may present opportunities for diversification and risk management.
That’s not to say that you should—it’s not financial advice. Instead, this page should simply give you more information about this understated metal and why it continues to receive coverage as a precious metal across global markets.