There are people for whom jewelry is purely a matter of style. And there are those who have a red stripe on their neck after four hours. If you belong to the second group, you have probably already read that something has to do with nickel — but rarely what that concretely means. This guide on jewelry for sensitive skin explains what the EU limit value for nickel release regulates, how common materials differ, why a nickel allergy is something different than a green discoloration on the skin — and where the limit lies of what a jewelry manufacturer can honestly promise. An example from our assortment that clearly shows the material question is the protective stone necklace set with tiger's eye and 18K gold plating from the studio in Eltville in the Rheingau.

Jewelry for sensitive skin — nickel, materials and what you should watch out for

Status: August 2026 · Reading time approx. 11 minutes · Written by Marie Okoma, NemoMatheo Jewelry Studio

Jewelry for sensitive skin: what the EU limit value for nickel release really regulates, how stainless steel, gold-plated brass and silver compare, why green discolorations are mostly not an allergy — and what we can prove about our own pieces and what not.

📑 Table of Contents

• Why skin reacts to jewelry at all
• What EU law actually prescribes
• The materials in comparison
• What we can say about our own pieces — and what not
• Natural stone and pearls — the uncomplicated part
• Earrings — the most sensitive case
• 7 rules for everyday life with sensitive skin
• Green discolorations are mostly not an allergy
• Pieces with a large stone and small metal surface
• Frequently Asked Questions
• Sources & notes

Why skin reacts to jewelry at all

Most skin reactions to jewelry have one of three causes — and only one of them is actually an allergy.

First, contact allergy. Nickel is one of the most common contact allergens in Europe. Once sensitized, you generally remain so permanently. The reaction is not triggered by the metal itself, but by nickel ions that detach from the material upon skin contact — especially in combination with sweat.

Second, friction and moisture. Too tight a clasp, a Ring, under which water and soap residues sit, a bracelet that chafes during sports: This produces redness that looks like an allergy, but is mechanically caused.

Third, residues. Perfume, hand cream, sunscreen and detergent collect under jewelry pieces and sit there on the skin for hours. This is the most common cause in people who suddenly react even though they have been wearing the same piece for years.

The distinction is practically relevant: Only in the first case does the material have to change. In the other two cases, usually only the habit changes. Which of these applies to you, however, can only be determined by a dermatologist — this article does not replace medical clarification.

What EU law actually prescribes

Contrary to popular belief, there is no ban on nickel in jewelry in the EU. What there is, is a limit value for the release of nickel to the skin, regulated in the REACH Regulation, Annex XVII, Entry 27. Two values are decisive there:

• 0,5 micrograms per square centimeter per week for articles that come into prolonged contact with the skin — i.e., necklaces, bracelets, rings, watch cases.
• 0,2 micrograms per square centimeter per week for rods and closure parts inserted into pierced ears or other pierced body parts—meaning earring posts.

The crucial point: A piece can contain nickel and still comply with the limit value because the nickel is bound within the metal structure and barely releases. Exactly why the term "nickel-free" is strictly speaking rarely correct—the correct term would be "tested for nickel release" or "complies with the REACH limit value". Anyone advertising the former should be able to prove the latter.

For you as a buyer, this means: The question "is this nickel-free?" often leads nowhere. The better question is "are test reports for nickel release available?".

The materials in comparison

Roughly sorted by what causes the most problems in practice—from uncritical to critical:

Natural stone, freshwater pearls, mother-of-pearl, wood. These materials do not release nickel because none is contained. Reactions to them are very rare. Where they do occur, it is usually due to the thread, the setting, or the clasp—not the stone.

Stainless steel (austenitic, such as grades 304 and 316L). Contains nickel by design, but releases it only to a minor extent as it is bound within the dense metal structure. 316L is frequently used in jewelry and medical technology precisely for this reason. The decisive factors remain the specific alloy and processing—the material designation "stainless steel" alone does not say anything about this.

Titanium and niobium. The most reliable choice for a known nickel allergy, especially for freshly pierced earlobes. However, very limited in design and virtually non-existent in handmade natural stone jewelry.

Sterling silver 925. The remaining 7,5 percent is mostly copper; nickel-containing variants occur, but are uncommon. Discoloration due to tarnishing is more common here than nickel reactions.

Gold-plated brass and zinc alloys. This is where the actual risk lies—not because of the gold layer, but because it wears off. As long as the plating is intact, the skin is in contact with gold. If it is rubbed through at edges and clasps, the base material is exposed. Therefore, reactions to such pieces often only occur after months.

What we can say about our own pieces — and what not

At this point it gets uncomfortably honest, and that is intentional.

Our pieces are crafted with a stainless steel base and an 18K gold plating, complemented by natural stone, freshwater pearls, and mother-of-pearl. This is stated on the product pages, and we can prove it. We can similarly prove the earring posts: in most models, they consist of 925 sterling silver and are therefore nickel-free—that is a material statement, not a presumption. What we do doesn't not do is advertise the rest of the jewelry across the board as "nickel-free" or "hypoallergenic"—because for that we would need test reports on nickel release for every batch, and we currently do not have those in a form that would support such a claim.

This is not an indication that something is wrong with the pieces. It is the difference between "we know it" and "we assume it". Much of the jewelry advertised online as "nickel-free" relies on supply chain assurances rather than our own measurements—we think it is cleaner to state this openly than to adopt a phrasing that sounds good.

Specifically, this means for you: If you have been diagnosed with a nickel allergy, write to us before ordering. We will then tell you what material information we have for the respective piece, and if we don't know something, we will say so. And as a consumer in the EU, you have the 14-day right of withdrawal anyway—with sensitive skin, a brief wear test at home is more honest than any promise on a product page.

Natural stone and pearls — the uncomplicated part

If you react sensitively, the easiest lever is not a different metal, but less metal on the skin. With natural stone and pearl jewelry, the majority of the contact surface rests on stone, mother-of-pearl, or pearl—metal is only found on spacer parts and the clasp.

The Terra Forte Bracelet – Tiger's Eye Charm Bracelet is such a case: The strand consists of tiger's eye beads, the metal is limited to the charm. The situation is similar with Elva Pearl Bracelet, where freshwater pearls form the contact surface.

For necklaces, the same idea works via the pendant: The Mariposa Necklace – Mother-of-Pearl Butterfly uses mother-of-pearl as a surface, and the Morning Star – Elegant Mother-of-Pearl Ring applies the principle to the ring—rings in particular are critical because moisture and soap residue collect under them.

Earrings — the most sensitive case

Earrings are the only jewelry that goes through the skin. Therefore, the stricter limit value applies to them, and that is why many people react exclusively at their ears.

In our earrings, the earring posts are made of 925 sterling silver in most models. This is relevant because 925 silver in the usual alloy consists of pure silver and copper—nickel is not contained therein. Thus, precisely the part that goes through the earlobe and for which the stricter limit value applies is nickel-free. If you want to know whether a specific model is one of them, ask us briefly before ordering—we will tell you for the specific piece.

Three points also help in practice: First only the post and the clasp count for the stud—the decorative element in front does not touch the wound. Second freshly pierced earlobes are a special case where titanium is the only sensible choice and fashion jewelry is fundamentally too early. Third the most common cause of irritated earlobes in already healed piercings is not the material, but sleeping with studs and uncleaned clasps.

If you are unsure, start with hoops or huggies, which lie comparatively little in the piercing channel, and wear them only for a few hours at first. It is also helpful to test a new pair first on the ear that experience shows is less sensitive—for many people, both sides react with varying degrees of intensity, and you recognize earlier whether it is due to the material or how it is worn.

7 rules for everyday life with sensitive skin

1. Put on jewelry last. First cream, perfume, and sunscreen, then wait five minutes, then jewelry.
2. Remove during sports. Sweat is the most important factor in the release of metal ions.
3. Do not shower with rings. Not because of the water, but because of the soap residue that remains underneath.
4. Clean clasps as well. The lobster clasp is the part with the most skin contact and is cleaned least often.
5. Test new pieces briefly first. Two hours, then check—not directly a whole day.
6. Pay attention to the fit. Whatever chafes, irritates, regardless of the material.
7. Have persistent reactions checked out. A patch test with a dermatologist provides clarity that no product text can deliver.

Green discolorations are mostly not an allergy

A green mark on the finger looks dramatic, but is usually harmless: It occurs when copper components in the metal react with sweat, acids from the skin, or cosmetics. The result is a discoloration on the skin's surface that can be washed off—not an immune reaction.

Triggers are often very acidic sweat, high humidity, or acidic care products. If this bothers you, help comes in this order: wear the piece drier, wipe the inside regularly, remove rings in between. If it suddenly happens with a gold-plated piece, this is often an indication that the plating has become thin at this point. More about this in the material guide on 18K gold-plated and stainless steel and in comparison 925 silver vs. gold-plated.

Pieces with a large stone and small metal surface

No promise, but a simple design question: These pieces have a comparatively large amount of natural stone, pearl, or mother-of-pearl at the contact surface and little metal.

• Terra Forte Bracelet – Tiger's Eye Charm Bracelet — tiger's eye strand, metal only on the charm.
• Elva Pearl Bracelet — freshwater pearls as contact surface.
• Mariposa Necklace – Mother-of-Pearl Butterfly — mother-of-pearl as pendant surface.
• Morning Star – Elegant Mother-of-Pearl Ring — Ring with mother-of-pearl surface.
• Sunburst – Adjustable Tiger's Eye Ring — adjustable, resulting in fewer pressure points.
• Protection Stone Necklace Set with Tiger's Eye & 18K Gold Plating — Natural stone with 18K gold-plated stainless steel.
• Trio Luxe Necklace – Elegant Set of Three Necklaces Sodalite Metropolitan – Elegant double chain bracelet — pure metal pieces, where a brief try-on is especially worthwhile.

You can find all of this in the Natural Stone Collection.

Frequently Asked Questions

Is stainless steel jewelry suitable for sensitive skin?

Austenitic stainless steel like 316L contains nickel, but releases it only in very small amounts bound within the metal structure and is therefore frequently used for applications close to the skin. However, the designation "stainless steel" alone does not specify the exact alloy — if you have a diagnosed nickel allergy, you should ask the retailer for existing test values.

Does "nickel-free" mean that no nickel is contained at all?

Usually not. Via REACH Annex XVII Entry 27, the EU regulates not the nickel content, but the nickel release into the skin: 0,5 micrograms per square centimeter per week for prolonged skin contact, 0,2 for items in pierced ears. A piece can contain nickel and still comply with the limit.

Are NemoMatheo earrings nickel-free?

The earring posts on most models are made of 925 sterling silver, and this alloy of fine silver and copper contains no nickel — so the part that goes through the earlobe is nickel-free. For the rest of our jewelry, we deliberately do not advertise nickel-free status because we do not have our own test data for nickel release for them; the material specifications on the product pages apply there: stainless steel base with 18K gold plating, plus natural stone, freshwater pearls, and mother-of-pearl. If you have a diagnosed allergy, ask us about the specific model before ordering.

Why is my skin turning green under the ring?

This is usually not an allergy, but a reaction of copper components in the metal with sweat, skin acids, or cosmetics. The discoloration is on the surface of the skin and can be washed off. If it occurs anew on a gold-plated piece, the gold layer has often become thin in that spot.

Which jewelry is the most unproblematic for sensitive skin?

Pieces with a large stone, pearl, or mother-of-pearl surface and little metal on the contact surface, simply because less metal touches the skin there. For freshly pierced ears, titanium is the most reliable choice; fashion jewelry is generally too early at this stage.

Sources & notes

The mentioned limits come from Regulation (EC) No. 1907/2006 (REACH), Annex XVII, Entry 27, in its current version; the official text of the regulation is authoritative. Information on alloys follows the common metallurgical classification of austenitic stainless steels. This article is general consumer information and does not replace a medical diagnosis or allergological evaluation; if you experience persistent skin reactions, please consult a dermatologist. For our own pieces, we provide exclusively the material information documented on the product pages — we make no statement regarding nickel release. Further reading: 18K gold-plated & stainless steel Sodalite caring for jewelry 2026.

Related articles & collections:

• 18K gold-plated & stainless steel — Material guide
• 925 silver vs. gold-plated
• caring for jewelry 2026
• Natural Stone Collection

Note: The product images in this article are original photos of our handcrafted pieces.

Written with the help of AI, edited by Marie Okoma, NemoMatheo Atelier · 2026-08-11