Your white gold ring has lost its brilliance? It's taking on a slightly yellow hue? There's no need to worry, this is a perfectly normal phenomenon. 18K white gold (750 thousandths), the standard used by Mayuri, is not a naturally white metal: it is an alloy of pure gold and palladium, coated with a fine layer of rhodium that gives it its silvery shine.
With the right care and a clear understanding of rhodium plating, your white gold ring will retain its brilliance for years to come. In this guide, we cover the composition of white gold, why it yellows, our recommended home cleaning method, everything you need to know about rhodium plating, a white gold versus platinum comparison, and nickel allergies.
1. What is white gold? Composition and characteristics
White gold does not exist in nature. Unlike yellow gold, which is the natural colour of pure gold (24 carat). White gold is a man-made alloy, invented in the 1910s and 1920s as a more affordable alternative to platinum.
The 3 types of 18K white gold alloys:
- Standard grey gold (silver/copper/zinc, no palladium or nickel): 75% gold and a silver-copper-zinc alloy. The most common and affordable option in Europe. Natural colour beneath the rhodium plating: distinctly yellow. This is the default choice when a supplier offers "white gold" without further specification.
- Palladium white gold (premium): 75% gold and 25% palladium. Natural colour: light grey, far less yellow. Hypoallergenic. More expensive, as palladium is a precious metal from the platinum group. This is the alloy used by Mayuri.
- Nickel white gold (historical, outside the EU): 75% gold, approximately 12% nickel, approximately 10% copper, and approximately 3% zinc. Natural colour: noticeably yellow. Strictly regulated in Europe (REACH directive) due to nickel allergies. Still common in the United States, Asia, and the Middle East, as well as in antique or vintage jewellery predating European regulations.
Why this matters for care: the natural colour of the alloy beneath the rhodium plating varies considerably. Standard grey gold will appear visibly yellow once the plating wears away. Palladium white gold will remain light grey, with any yellowing far less noticeable. This is a genuine advantage in everyday wear.
The rhodium is a metal from the platinum group, exceptionally white and brilliant, deposited as a fine layer (0.75 to 1.0 micron) through electroplating. It is this layer that gives white gold its silvery radiance. The eagle's head hallmark (18K gold) is the same for white gold, yellow gold, and rose gold. Only the alloy differs.
> Early in our journey, a client called us in great distress: her white gold ring had turned yellow. She believed it was a defect. We had to explain that this was entirely normal, simply the natural wear of the rhodium plating, and that re-plating with a jeweller would fully restore its white brilliance. That experience made us realise just how unsettling this could be for our clients. We therefore decided to move to palladium white gold for all our designs. It is a more costly alloy, but its naturally light grey colour makes any yellowing far less visible as the rhodium plating wears. A true long-term comfort: our clients no longer need to worry about re-plating every two or three years.
Learn more about the metallurgy of white gold on Wikipedia.
2. Why is your white gold ring turning yellow?
Yellowing is not a defect: it is the natural colour of the white gold alloy re-emerging as the rhodium layer wears away. Palladium white gold has a natural grey-yellow tone; nickel white gold is even more yellow.
Factors that accelerate rhodium plating wear:
- Mechanical friction: wearing the ring on the dominant hand, constant contact with surfaces such as keyboards, steering wheels, and bags.
- Chemical contact: perfumes, moisturising creams, hand sanitisers (alcohol), household cleaning products
- Chlorinated water (swimming pools) and sea water (salt)
- Acidic perspiration (pH varies from person to person: some individuals wear through the rhodium plating more quickly)
Does 18K white gold yellow faster than 14K? Yes, because it contains 75% pure gold (naturally yellow) compared to 58.5%. The natural colour of the alloy beneath the rhodium plating is more yellow in 18K, though this difference is offset by the superior quality of the alloy.
Data on gold alloys: World Gold Council.
Here is the method recommended by our gemologists for cleaning your white gold ring at home, while preserving the rhodium plating:
- Prepare: a bowl of lukewarm water (30-40°C) with a few drops of mild soap (Marseille soap or a neutral washing-up liquid). Never use hot water, as thermal shock can damage the stones.
- Soak: leave the ring in the soapy solution for 15 to 20 minutes to dissolve oily residue (creams, sebum).
- Brush: gently scrub with a soft-bristled brush (a worn soft-bristled toothbrush works well). Pay particular attention to the underside of the setting and around the prongs, where residue tends to accumulate. Never scrub hard; the rhodium plating is delicate.
- Rinse: under lukewarm running water, with the sink plug in place for safety.
- Dry: pat dry with a soft, lint-free cloth (microfibre or polishing cloth). Do not leave to air dry, as this can leave limescale marks on the rhodium plating.
This method protects the rhodium plating. Abrasive methods (toothpaste, bicarbonate paste, vinegar) wear away the fine layer of rhodium and accelerate yellowing.
For white gold rings set with Diamonds or Sapphires, this gentle method is perfectly suitable. For more delicate stones (Emeralds, opals), please consult a professional jeweller.
4. Products and habits to avoid at all costs
To use:
- Marseille soap or a fragrance-free mild soap
- Neutral dish soap (pH-neutral)
- Lukewarm water (30–40 °C)
- Soft-bristle brush (for delicate use)
- Microfibre cloth or polishing cloth
To avoid at all costs:
- Toothpaste: contains micro-abrasives (silica, calcium carbonate) that scratch the rhodium plating, making it the most common mistake
- Baking soda paste: too abrasive, damages the rhodium layer
- White vinegar: acetic acid attacks the underlying alloys
- Bleach / chlorine: corrodes alloys and can cause irreversible discolouration
- Domestic ultrasonic cleaner: uncalibrated vibrations pose a risk to set stones and solder joints
- Bleach bath or swimming pool: chlorine is the number one enemy of rhodium plating
5. Rhodium plating: everything you need to know
What is rhodium plating? An electrolytic deposit of a thin layer of rhodium (a platinum-group metal, six times more expensive than gold) applied to the surface of the white gold ring. Rhodium is exceptionally white, hard (hardness 6 Mohs vs. 3–3.5 for 18K gold) and highly resistant to corrosion.
The workshop process:
- Complete cleaning and degreasing of the ring
- Checking the settings and solder points
- Polishing the surface to prepare adhesion
- Electrolytic rhodium bath (a few minutes in a rhodium sulfate solution)
- Rinsing and drying
- Final quality control
Average cost in the US: $75 to $150 depending on the size of the ring, the complexity of the settings, and the jeweller. Duration: approximately 30 minutes in the workshop.
Standard thickness: 0.75 to 1.0 micron in fine jewellery (compared to 2 to 5 microns in industrial applications). This extreme thinness explains the wear: the layer is finer than a human hair.
How often should it be done? Every 1 to 3 years for daily wear, and up to 5 years for occasional wear (see the detailed timeline in the following section).
Can rhodium plating be done at home? No. Rhodium plating requires a professional electrolytic bath, along with precise temperature and electrical current control. "At-home rhodium plating" kits sold online produce uneven results and may damage the ring.
6. How long does rhodium plating last? A timeline based on wear
| Wear Profile | Estimated Rhodium Plating Duration | Main Factors |
|---|
| Intensive daily wear (wedding ring, dominant hand, sport, housework) | 6 to 12 months | Constant friction, perspiration, chemical products |
| Normal daily wear (ring worn every day, removed for high-risk activities) | 1 to 2 years | Moderate mechanical wear |
| Regular wear (3-4 times per week, removed at night) | 2 to 3 years | Reduced friction, good care habits |
| Occasional wear (events, evenings out) | 3 to 5 years | Minimal wear |
Signs that the rhodium plating is wearing off: the ring takes on a slightly yellow or grey tint, first appearing on areas of friction such as the inside of the band, the top of the setting, and the sides. The wear is gradual, not sudden.
Our tip: re-plating is more cost-effective when done before the layer is completely worn away, as surface preparation is simpler at that stage.
| Criterion | 18K White Gold | Platinum 950 |
|---|
| Composition | 75% gold + 25% palladium | 95% platinum |
| Natural colour | Greyish-yellow (rhodium-plated to white) | Naturally grey-white |
| Rhodium plating required | Yes, every 1–3 years | No |
| Hardness | ~120–180 HV (harder) | ~60–80 HV (softer) |
| Scratch resistance | Good (metal is lost over time) | Lower (metal displaces rather than wears away) |
| Weight | Lighter | 60% heavier |
| Price | More affordable | 20–40% more expensive |
| Nickel allergy | Possible (if nickel-based alloy) | Hypoallergenic |
| Ageing over time | Yellows as rhodium plating wears | Develops a soft, matte grey patina |
| Specific care | Periodic re-rhodium plating | Periodic polishing |
When to choose white gold: a controlled budget, a preference for a bright white brilliance (renewable through rhodium plating), a ring set with Diamonds (rhodium plating makes Diamonds appear whiter).
When to prefer Platinum: no surface maintenance required, confirmed nickel allergy, a preference for a "pure" metal with no coating.
Both metals have their merits. 18K white gold offers excellent value for money with simple, periodic maintenance; platinum is ideal for those who prefer never to have it rhodium-plated.
8. White gold and nickel allergies
The issue: white gold has historically been alloyed with nickel, which is the leading contact allergen in Europe. Between 10 and 15% of women and 1 to 3% of men are sensitised to nickel.
European regulation: the REACH directive (Annex XVII, entry 27) limits nickel release to 0.5 µg/cm²/week for jewellery in prolonged contact with the skin. White gold jewellery containing nickel that exceeds this threshold is prohibited in the EU.
The palladium alternative: palladium white gold (used by Mayuri) contains no nickel and is naturally hypoallergenic. It is the preferred alloy in European fine jewellery.
The role of rhodium plating: as long as the rhodium layer remains intact, it acts as a barrier between the skin and the alloy. When the rhodium plating wears away, direct contact with a nickel-based alloy can trigger an allergic reaction, an additional reason to keep the rhodium plating up to date.
If you have a nickel sensitivity, always check the alloy composition with your jeweller before purchasing.
Consult the REACH regulation on nickel (European Chemicals Agency).
9. Everyday habits to preserve the brilliance of your white gold
Remove your ring before: sport (impacts, perspiration), housework (chemical products), gardening, swimming pools (chlorine), sea bathing (salt and abrasive sand), and applying creams or perfume.
Morning routine: get ready first (moisturiser, perfume, hand sanitiser), then put on your jewellery. Cosmetics contain chemical agents that wear down the rhodium plating.
Rinse after exposure: if you have accidentally worn your ring in a pool or the sea, rinse it immediately in clean water and dry it thoroughly.
Storage: keep your ring away from light in an individual jewellery case (avoid contact between pieces, as metals scratch one another). The Mayuri jewellery case is designed to protect finishes.
Engagement ring or solitaire in white gold: this is often the first white gold ring worn daily. Yellowing can come as a surprise after a few months; this is perfectly normal, and a re-plating restores the original brilliance.
10. When should you consult a professional jeweller?
Re-rhodium plating: as soon as a yellow tint becomes visible. Do not wait until the rhodium plating is completely worn away; the surface preparation is simpler and the result more lasting.
Polishing: for deep scratches that a polishing cloth cannot remove. The jeweller removes a fine layer of metal, then re-plates the surface with rhodium.
Setting inspection: if a stone appears to move or feels loose, have it checked immediately. A loosened setting risks losing the stone entirely.
Professional cleaning: an ultrasonic bath combined with diamond paste polishing and re-rhodium plating equals a complete restoration.
We recommend choosing a jeweller affiliated with the HBJO Federation or the Saint-Éloi Guild.
Frequently asked questions
Why is my white gold ring turning yellow?
Some yellowing is perfectly normal. White gold is an alloy of pure gold (naturally yellow) and palladium, coated with a fine layer of rhodium that gives it its bright white brilliance. As this layer wears with daily wear, the natural colour of the alloy gradually reappears. A re-rhodium plating appointment with a jeweller will fully restore its original radiance.
How much does rhodium plating cost for a white gold ring?
In the United States, the average cost of re-rhodium plating ranges from $70 to $140, depending on the size of the ring, the complexity of the setting, and the jeweller. The service typically takes around 30 minutes in the workshop.
How long does rhodium plating last?
The duration depends on how often the ring is worn: 6 to 12 months with intense daily wear, 1 to 2 years with regular daily wear, and up to 3 to 5 years with occasional wear. The factors that accelerate wear include friction, chemical exposure, and perspiration.
Does white gold deteriorate over time?
18K white gold is a durable metal. Any yellowing affects only the rhodium layer, not the metal itself. With regular care, including gentle cleaning and periodic re-rhodium plating, your white gold ring will remain beautiful for decades.
What is the difference between white gold and platinum?
White gold is a gold alloy coated with rhodium: less expensive, harder wearing, but requiring periodic re-rhodium plating. Platinum is a naturally white metal: more expensive, heavier, requiring no rhodium plating, though it develops a soft matte patina over time. Both are excellent choices for a Diamond-set ring.
Does white gold contain nickel? Is it hypoallergenic?
White gold may contain nickel or palladium depending on the alloy. Palladium white gold, as used by Mayuri, is hypoallergenic. European REACH regulations limit the nickel content permitted in jewellery. If you have a known allergy, always confirm the alloy composition with your jeweller.
How can you restore the colour of a white gold ring?
The only effective method for restoring the bright white appearance of a white gold ring is professional re-rhodium plating carried out by a jeweller. At-home methods such as gentle soap and water cleaning will remove surface dirt, but cannot restore a worn rhodium layer.
Can you rhodium-plate a ring yourself at home?
No. Rhodium plating requires a professional electrolytic bath with precise control of current and temperature. DIY rhodium plating kits available online produce uneven results and risk damaging your ring. Always entrust this process to a qualified jeweller.
How often should you have your white gold ring rhodium-plated?
For daily wear, plan for re-rhodium plating every 1 to 3 years. For occasional wear, every 3 to 5 years is generally sufficient. Watch for early signs of wear, as a yellow tint tends to appear first on the inner band and in areas subject to the most friction.
