What are the best metals for a custom ring if I have sensitive skin?
I get this question about once a week, usually from someone who's bought a cheap ring off a mall kiosk and spent the next month with a rash under the band....
I get this question about once a week, usually from someone who's bought a cheap ring off a mall kiosk and spent the next month with a rash under the band. The short answer is: nearly pure metals or nickel-free alloys. The long answer depends on which metal we're talking about and what's actually causing the reaction.
What's actually causing the irritation
Skin reactions to jewelry are almost always nickel allergy. Somewhere between 10 and 20 percent of people have it, and it's more common in women. Nickel is added to gold alloys to harden them - 14k yellow and white gold both contain nickel in most commercial alloys. The higher the karat, the less nickel, but 14k yellow still has roughly 8-10% alloy metals, and about half of that is usually nickel.
Copper can also cause reactions in a smaller number of people. But nickel is the culprit nine times out of ten.
Your best bets, ranked
1. Platinum (950Pt/Ru or 950Pt/Co)
Platinum is about 95% pure, so there's almost nothing in it to react to. The 5% alloy is usually ruthenium or cobalt, neither of which is a common allergen. The color is a warm white that doesn't need rhodium plating. The catch? It's heavy and expensive. A platinum men's band weighs about twice what the same ring in 18k gold does, and the price is roughly double per gram. But if you've got really sensitive skin and a budget that can handle it, this is the safest call.
2. 18k yellow gold (nickel-free alloy)
Here's the thing a lot of jewelers don't tell you: you can order 18k yellow gold that uses palladium instead of nickel as the hardener. It's not the default - most casting houses use the standard nickel-bearing alloy - but every good supplier carries it. I use Hoover & Strong's nickel-free 18k yellow, and I've never had a client react to it. The color is actually nicer - slightly warmer, slightly more yellow than standard 18k. The cost is about 10-15% more than regular 18k.
3. 22k gold
At 91.7% pure, 22k has very little alloy to cause problems. The trade-off is softness. A 22k ring will scratch and deform faster than 18k. For a thin wedding band worn daily, I'd steer toward 18k instead. For a wider band or a ring worn only occasionally, 22k is fine. I made a 22k band for a client named Priya last year - she wanted the color of pure gold without the fragility of 24k - and it's held up well, but she's careful with her hands.
4. Palladium (950Pd)
Palladium is 95% pure, like platinum, but lighter and cheaper. The color is a slightly grayer white - some people call it "steely" - and it doesn't need plating. It's also hypoallergenic. The catch is availability. Not every jeweler works with it, and resizing can be tricky. I've used it for men's bands and simple solitaires. A 6mm palladium band runs roughly $600-$900, which is less than half of what platinum costs.
5. Argentium silver (if you're set on silver)
I told you in the context that I think sterling silver doesn't belong in fine jewelry worn daily. I stand by that. But if you want silver because of price or color, go with Argentium - it's 935 or 960 parts pure silver with germanium instead of copper. The germanium suppresses tarnish and doesn't cause the green discoloration that regular sterling can. It's still too soft for a daily-wear engagement ring, but for a fashion ring or an occasional piece, it works.
What to avoid
- 14k white gold. Almost always contains nickel, and the rhodium plating will wear off in 6-12 months, exposing the alloy underneath. If you must have white gold, get 18k palladium-white instead.
- Cobalt chrome or tungsten carbide. These are technically hypoallergenic, but they can't be resized. Period. If you order one and your ring size changes, you're buying a new ring.
- Copper-rich rose gold. Some people react to the copper content in 14k or 18k rose gold. It's less common than nickel allergy, but it happens.
The thing nobody tells you about "hypoallergenic" metals
There's no such thing as a completely non-allergenic metal. Even platinum can cause a reaction in someone with a truly rare sensitivity - I've seen exactly one case in 22 years. The practical goal is to get the alloy content so low or so biocompatible that 99.9% of people can wear it without a problem. Platinum, nickel-free 18k, 22k, and palladium pass that test.
Best move? Go to a jeweler who carries nickel-free 18k or palladium-white gold. Have them order a sample piece of the alloy - a plain band blank - and let you wear it for a week on your other hand. If that doesn't cause a reaction, the ring won't either. I do this for every client who mentions sensitive skin, and it's caught a couple of edge cases before we committed to a full ring.