Gold Jewellery Allergies

Redness beneath a signet ring, itching around a bracelet after a full night's wear, irritated skin on the inside of a ring worn for months. The conclusion is often the same: "I am allergic to gold." This is almost always inaccurate.

Pure gold does not trigger a skin reaction. What causes irritation is almost always what accompanies it in the alloy: other metals added to harden the material, give it its colour, or reduce production costs. Nickel in white gold, copper in rose gold, a plating layer that wears away and exposes the metal beneath.

Understanding this distinction changes everything. The solutions differ depending on whether the reaction is to nickel, copper, or a degraded plated piece. This guide covers the real mechanisms, the compositions to know by gold colour, and what switching to solid 18K gold actually changes for sensitive skin.

24-carat gold, at 999 parts per thousand purity, is a noble and stable metal. In direct contact with skin, it does not cause contact allergy in individuals who have not been previously sensitised. This is precisely why it is used in medicine: dental prostheses, coronary stents, neurological implants.

An allergy to gold metal itself does exist, documented as sensitivity to Au³⁺ ions, but it remains rare. Estimated prevalence between 1 and 3% of individuals tested in specialised dermatological studies. It generally occurs following prolonged sensitisation, often preceded by a reaction to other metals, particularly nickel.

The underlying issue is that pure 24-carat gold is too soft to hold up in jewellery worn daily. Other metals are added to strengthen it and give it its colour. These alloys represent the true allergenic territory. When someone reacts to their "gold" jewellery, it is almost always to the alloy, not to the gold itself, a finding consistent with the medical literature.

The composition of a gold piece varies according to its colour and its purity. Each alloy formula carries its own potential allergens.

White gold is the most frequent source of reactions. To whiten yellow gold, jewellers add palladium or, in older formulations and non-compliant imported pieces, nickel. Nickel is the number one contact allergen in Europe: approximately 10 to 15% of the population is sensitive to it, according to data from the Nickel Institute, with a higher prevalence among women. White gold produced before the strengthening of the REACH directive, or purchased through unregulated platforms, may still present concerning levels of releasable nickel.

Rose gold draws its hue from a high proportion of copper, in the order of 20 to 25% at 18K. Copper is less allergenic than nickel, but some highly reactive skin types may respond to it, particularly after prolonged wear or in cases of heavy perspiration.

18K Yellow Gold offers the most favourable composition: 75% pure gold, complemented by silver and copper, with no nickel in serious formulations. It is the most well-tolerated gold colour for sensitive skin, and our top recommendation.

A piece of jewellery in 9K gold (375 parts per thousand) contains only 37.5% pure gold. The remaining 62.5% is a blend of alloys whose exact composition varies by manufacturer. At 14K (585 parts per thousand), that rises to 58.5% gold. At 18K (750 parts per thousand), the gold content reaches 75%, and the remaining 25% typically consists of silver and copper in serious formulations.

This ratio has a direct mechanical consequence: the higher the purity, the less room there is for allergenic alloys. With a maximum of 25% alloy at 18K, and that quota occupied primarily by silver and copper, there is simply no room for nickel in a quality 18K yellow gold piece.

In practice: someone who reacts to a ring in 9K gold will not necessarily react to the same design in 18K gold. Switching to solid 18K yellow gold is enough to resolve most nickel sensitivities. We see this regularly with customers who had given up wearing gold altogether.

Many reactions find their explanation here, rather than in a true allergy to gold.

Gold-plated jewellery: an extremely thin layer of gold, between 0.5 and 3 microns, deposited through electroplating onto a base metal, often brass or a nickel-containing alloy. Perspiration, skincare products, and everyday friction gradually erode this layer. The base metal rises to the surface, and it is that metal which the skin comes into contact with daily once the gilding has worn away. The reaction has nothing to do with gold: it is the underlying metal that causes everything.

Vermeil: a piece in solid 925 Silver coated with a layer of gold of at least 5 microns (the French vermeil standard). Its sterling silver base places it above standard gold-plated pieces. One point worth keeping in mind for reactive skin: the surface in contact with the skin is gold, just as with a solid piece. Vermeil resolves the question of the base metal; for a sensitivity to the gold alloy itself, solid 18K gold and Platinum remain the right answers.

Solid gold: the entire piece is made of gold alloy, from core to surface. There is no different base metal to be exposed through wear. The risk rests solely on the composition of the alloy, which remains stable and consistent throughout the lifetime of the piece.

A gold-plated piece that triggers a reaction does not prove an allergy to gold. It is a sign that the layer has given way.

Solid 18K yellow gold: our top recommendation for sensitive skin seeking to remain in the world of gold jewellery. No nickel, a limited alloy proportion, and well-documented tolerance. For the vast majority of nickel sensitivities, it is more than sufficient.

Platinum: a metal that is 95% pure the remaining 5% consists of iridium or ruthenium, both with very low allergenic potential). Naturally hypoallergenic and dense, the reference metal for reactive skin in fine jewellery. Its use in long-term surgical implants offers a clear indication of its biological tolerance.

Bespoke craftsmanship: the ability to specify the exact alloy composition. For someone who has identified their precise allergen through patch testing, this is the definitive solution: eliminating nickel, excluding copper if necessary, and selecting a platinum of specified composition. Our workshops can adapt the formula according to the constraints identified by a dermatologist.

If reactions recur across different pieces of jewellery, or persist after switching to 18K yellow gold, an allergological patch test performed by a dermatologist can precisely identify the allergen responsible: nickel, copper, cobalt, chromium. The test takes between 48 and 96 hours. Once the results are in hand, the choice of materials becomes far more targeted.

Without a patch test, it is a matter of trial and error. Someone sensitive only to nickel can wear 18K rose gold without restriction, whereas a copper allergy would rule it out as well. This distinction considerably changes the available options.

For an active reaction: rinse the area with cold water, remove the jewellery, and apply a low-dose cortisone cream (available over the counter at a pharmacy). Consult a dermatologist if the reaction is severe, widespread, or does not subside within 48 hours.

European regulation REACH governs the release of nickel in all jewellery intended for prolonged skin contact. The current limit is 0.5 µg/cm²/week. Since January 2025, jewellery intended for children is subject to mandatory testing by accredited laboratories, applying the same thresholds.

What this guarantees for compliant jewellery: a level of nickel release below the threshold considered acceptable for the majority of nickel-sensitive individuals. What it does not guarantee: compliance of jewellery imported from outside the EU, or purchased through platforms without verification.

A piece of jewellery with no indication of composition or traceability cannot be considered reliably safe to wear. A reputable fine jewellery brand communicates its REACH compliance and can provide the exact composition of its alloys upon request.