Why Your Jewelry Turns Skin Green — And What We Do Differently

Published July 2026 · Skin Safety · 5 min read

You've been there. You buy a beautiful ring or necklace — maybe you even splurged on it — and after a few days of wearing it, there it is: a green or black stain on your skin. You scrub. It fades. You wear the piece again. The stain comes back.

And then the worst thought creeps in: "Maybe it's me. Maybe I'm allergic to jewelry."

It's not you. It never was. And once you understand what's actually happening, you'll never look at cheap jewelry the same way again.

The Culprit: Brass (And Its Friends)

That green mark is called a copper salt reaction. Here's what's happening:

Most affordable jewelry — the kind you find in fast-fashion stores, on marketplace sites, or even in some mid-range boutiques — uses brass as its base metal. Brass is an alloy of copper and zinc. It's cheap. It's easy to cast. And it reacts with your skin.

When brass oxidizes against your skin's natural oils, sweat, and pH, it releases copper salts. Those salts are the green residue. They're not harmful — but they're a clear signal that the metal touching your body is reactive and unrefined.

Other common culprits include:

• Nickel — A leading cause of contact dermatitis and skin rashes. Banned in the EU for jewelry that touches the skin, yet still widely used in cheaper imports.
• Copper — Even in "copper jewelry" marketed as health products, the oxidation leaves green marks.
• Low-grade alloys — Mixed industrial metals that are poorly regulated and often contain trace irritants.

Why Do Brands Use These Materials?

Simple: cost. Brass costs a fraction of what quality stainless steel or precious metals cost. And when your business model depends on high volume and low prices, every cent saved on materials multiplies across thousands of units.

The problem is, nobody tells you this when you're buying. The packaging says "gold tone." The website says "luxury finish." But underneath that thin layer of color, there's brass — waiting to react.

The LOTTEDS Answer: No Brass. No Nickel. No Compromise.

When our founder Livia spent 12 years in jewelry customer service, she heard the same question hundreds of times: "Is it me? Am I allergic to jewelry?"

She knew the answer was no. The problem was the materials — and nobody in the industry wanted to change because it would cost more.

So when she started LOTTEDS in 2020, she made one rule: every piece must pass the skin test first.

For pieces that need extra flexibility, we use a reinforced alloy composite sealed with an anti-oxidation barrier. For our silver pieces, we use solid 925 sterling — not a silver wash over brass.

When we apply gold, we use PVD (Physical Vapor Deposition) — a vacuum process that bonds 18K gold at the molecular level. It's not paint. It's not a thin wash that rubs off in weeks. It's a permanent bond designed to last for years.

How to Tell If Your Current Jewelry Contains Brass

If you're looking at pieces you already own, here are three quick tests:

1. The Green Test: Does it leave a mark? If yes, brass is almost certainly the base metal.
2. The Magnet Test: Brass is non-magnetic. 316L stainless steel is also generally non-magnetic (or very weakly magnetic). But if a piece marketed as "stainless steel" is strongly magnetic, it may be a lower-grade steel containing nickel.
3. The Wear Test: Does the gold color fade after a few weeks of daily wear? If so, it's likely a thin electroplating over brass.

Jewelry Should Love You Back

You shouldn't have to choose between beautiful jewelry and comfortable skin. You shouldn't have to take your necklace off halfway through the day because it's irritating your neck. And you absolutely shouldn't have to scrub green residue off your fingers every evening.

That's why we do what we do. Because the women who called Livia for 12 years deserved better. And so do you.

Explore all our materials → · Read Livia's story →