Been looking into platinum lately and honestly it's pretty interesting how underrated this metal is in most investor conversations. Most people think precious metals, they picture gold or silver, but platinum actually sits as the third most-traded precious metal globally and the applications are way broader than most realize.

Let me break down what is platinum used for, because understanding the demand drivers really matters for anyone thinking about this sector. The biggest use case is actually automotive - we're talking catalytic converters. These things convert over 90% of harmful exhaust emissions into harmless compounds, which is why they've been mandatory in the US and Japan since 1974. Now over 95% of new vehicles have them. The automotive sector was pulling roughly 3.17 million ounces of platinum in 2024, with forecasts suggesting it could hit 3.25 million ounces. That's massive and pretty stable demand.

Then there's the jewelry market, which is the second biggest demand driver. Platinum's got this unique combination - it's durable, doesn't tarnish, and can handle repeated heating without degrading. China's become the dominant market here. Jewelry demand was tracking around 1.95 million ounces in 2024. What's interesting is that platinum jewelry often commands higher prices than gold, even though platinum's spot price has lagged gold since 2015.

The industrial side of what is platinum used for is honestly massive. We're talking catalysts for fertilizer production, hard drives, electronics, sensors, dental work, glass manufacturing. The metal's reactivity to oxygen and nitrogen oxides makes it perfect for detection equipment in vehicles and buildings. Combined with medical applications, industrial demand hit around 2.43 million ounces in 2024.

Medical applications deserve their own mention too. Platinum goes into catheters, stents, neuromodulation devices, and even cancer drugs like cisplatin. It's biocompatible and inert in the body, making it ideal for implants. Medical demand has been climbing steadily.

Now here's the thing - platinum has traded between $900-$1,100 per ounce through 2024 and into 2025, which is interesting considering it's 30 times rarer than gold. The price disconnect comes down to market dynamics. Gold's got that safe-haven status and currency heritage, while platinum's heavily dependent on industrial and automotive demand. When economies tighten, automotive demand softens, and that hits platinum harder.

The supply side is also worth understanding. South Africa produces most of the world's platinum, but they've been dealing with electricity issues and infrastructure problems. Russia's typically second, but geopolitical factors have complicated that. COVID aftermath also left supply chain ripples.

What is platinum used for ultimately matters because it tells you where demand is heading. Stricter emissions rules globally mean autocatalyst demand isn't going anywhere. Industrial applications keep expanding. Medical uses are growing. The jewelry market keeps adapting. If you're looking at precious metals beyond the obvious gold play, platinum's definitely worth understanding - the fundamentals are solid even if the price hasn't caught up to the rarity factor yet.