Rhodium is one of the rarest and most valuable precious metals on Earth — but unlike gold, silver, or even platinum, you can’t just walk into a coin shop and buy a rhodium bar. There’s a reason for that. 

Rhodium Isn’t a Retail Metal 

Rhodium isn’t sold like typical investment metals. You won’t find it at your local bullion dealer, and you won’t see it offered in bars or coins at Costco or online bullion stores.
That’s because rhodium isn’t traded actively in the retail market and has no widely-available investment products. 

The Market Is Extremely Illiquid 

Rhodium is primarily traded on the industrial wholesale market, not the retail side.
Spreads are extremely wide, supply is thin, and very few traders even handle rhodium. Unlike gold or silver — where spreads might be 1–2% — rhodium can have very large buy-sell spreads, making it hard for everyday investors to buy or sell without taking a big loss. 

It’s Used Almost Entirely in Catalytic Converters 

About 85% of all rhodium produced is consumed by the automotive industry for catalytic converters.
Because demand is so concentrated — and because the market is so small — rhodium isn’t packaged into investor products like coins or bars. 

So Where Can You Buy Rhodium? 

The truth?
Unless you’re an industrial buyer with a pool account at a metals refiner, you generally can’t. Rhodium simply isn’t produced in a form meant for retail investors. 

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