Just been reading up on platinum and honestly, the use of platinum across different industries is way more interesting than most people realize. It's not just some obscure precious metal sitting in vaults—this stuff actually powers a ton of everyday technology and applications.

So here's the thing: platinum is the third most-traded precious metal globally, but demand varies wildly depending on which sector we're looking at. The biggest chunk? Autocatalysts in vehicles. These catalytic converters are basically everywhere now—over 95% of new cars have them. They convert more than 90% of harmful exhaust into less toxic stuff like CO2 and water vapor. Back in 2024, automotive demand was sitting around 3.17 million ounces, with forecasts pointing to 3.25 million ounces by 2025. As emission standards keep tightening, this particular use of platinum isn't going anywhere.

Then there's platinum jewelry, which is the second largest demand driver. The metal has this unique combo of being incredibly durable, resistant to tarnish, and able to handle repeated heating without degrading. Interestingly, China dominates the platinum jewelry market now, though the history goes way back—South Americans were making platinum ornaments over 2,000 years ago. Jewelry demand was tracking toward 1.95 million ounces in 2024.

But here's where it gets really diverse: industrial applications of platinum are basically endless. We're talking platinum catalysts for fertilizer production, hard drives with insane storage density, electronics, dental work, glass manufacturing, and sensors in everything from home safety systems to medical instruments. The metal's reactivity to oxygen and nitrogen oxides makes it perfect for detecting pollutants. Industrial and medical demand combined was forecast around 2.43 million ounces in 2024.

On the medical side specifically, platinum's biocompatibility and inertness in the body make it ideal for catheters, stents, and neuromodulation devices. Plus, cancer drugs like cisplatin and carboplatin rely on platinum to fight testicular, ovarian, breast and lung cancers. Medical demand has been climbing and was expected to hit 303,000 ounces in 2024.

What's wild is despite platinum being 30 times rarer than gold and way harder to mine, gold has been trading at more than double the price. This divergence started around 2015. The reason? Gold's seen as this safe-haven asset, whereas platinum's heavily dependent on industrial and jewelry markets—which struggle when economies tighten. Supply issues haven't helped either, with South Africa (the top producer) dealing with electricity and railway problems, plus hangover effects from COVID and ongoing geopolitical tensions.

So if you're considering precious metals, understanding the use of platinum across these different sectors actually tells you a lot about where demand might go. Both platinum and gold have potential, but they move on different drivers entirely.