PVD or electroplating — which finish should your jewelry use?
These two finishes produce the same colour on the day a piece arrives and diverge completely after three months of wear. The difference is not quality of workmanship — it is that one deposits a ceramic compound harder than the base metal and the other deposits soft metal from a bath.
What actually differs
Electroplating makes the piece the cathode in an electrolyte bath and deposits metal ions onto it under an electric current. The deposited layer is metallic gold, rose gold, rhodium or ruthenium — soft, and only as thick as current and time make it.
PVD — physical vapour deposition, sold as IP or ion plating — vaporises a solid target inside a vacuum chamber. The vapour reacts with an admitted gas and condenses on the piece as a ceramic compound, usually titanium nitride and its relatives, bonded at the atomic level and harder than the steel underneath.
So a plated finish wears away because it is soft metal sitting on top of harder metal. A PVD finish resists wear because it is harder than the substrate it protects.
Side by side
| PVD / IP coating | Electroplating | |
|---|---|---|
| Deposits | Ceramic compound (titanium nitride family) | Metallic gold, rose gold, rhodium, ruthenium |
| Typical thickness | 0.3–1.0 µm | 0.05–5 µm depending on grade |
| Hardness | Harder than the base metal | Softer than the base metal |
| Wear life | Years of daily wear | Weeks (flash) to several years (heavy) |
| Salt spray, ASTM B117 | 48–96 h | 8–48 h |
| Relative cost | $$$ | $ to $$$$ by thickness |
| Colour range | Narrower — gold, rose, black, gunmetal, blue | Very wide |
| Substrates | 316L, titanium | Brass, zinc alloy, silver, copper, steel |
| Zinc alloy | Not possible | Standard route |
| Nickel barrier needed | No | Usually yes — the default barrier is nickel |
Thickness ranges and salt-spray figures are industry-typical. The vermeil minimum of 2.5 µm is a legal definition under US FTC 16 CFR §23.5.
Why zinc alloy cannot take PVD
A PVD chamber runs hotter than the 381–387 °C melting point of Zamak. A die-cast zinc part put through the process deforms.
This matters commercially because "PVD zinc alloy" appears in supplier listings regularly. It is electroplated. If a quotation offers PVD on a die-cast zinc component, the quotation has not been read carefully — and it is worth asking what else in it was not.
The nickel consequence
Conventional electroplating over brass needs a barrier layer between the base metal and the colour layer, and the industry default barrier is nickel. It sits micrometres beneath the surface that touches skin, and it is fully exposed once the thin gold layer wears through at a contact point.
PVD on stainless steel avoids the problem entirely: the coating is ceramic, there is no metallic barrier, and the substrate already passes EN 1811 on its own. For EU-bound pierced-ear items in particular, that removes a whole category of compliance risk. See EN 1811 nickel release compliance for the limits.
Which to choose
| If the piece is… | Choose | Why |
|---|---|---|
| Stainless steel, worn daily | PVD | Hardest option, and the substrate suits it |
| Brass or zinc alloy | Electroplating | PVD is not available on these substrates |
| A pierced-ear item for the EU | PVD on 316L or titanium | No nickel barrier layer involved at all |
| A fashion piece at a low price point | Electroplating, 0.5–1.0 µm | Widest colour range at the lowest cost |
| Sold on gold content | Gold-filled or vermeil | Legally defined minimums, real karat gold at the surface |
| An unusual colour | Electroplating | PVD colour range is narrower |
What to put in the purchase order
Specify the finish in microns, never by colour name. "18k gold plated" describes a colour, and covers everything from 0.1 µm — which wears through in weeks — to 2.5 µm, which lasts years. The gap between two quotations described identically is very often exactly this.
Also specify the barrier layer where plating is used, and require that bought-in findings meet the same standard as the body. Clasps and posts are where an otherwise compliant piece fails testing.
Questions on this
Each answer stands alone and can be read without the rest of the article.
Is PVD better than gold plating?
For durability on stainless steel, yes — a PVD coating is harder than the base metal and survives years of daily wear, where a 0.5–1.0 µm electroplated layer wears through at contact points within months to a couple of years. For colour range, substrate flexibility and cost, electroplating wins. They are different tools rather than better and worse.
How long does PVD coating last on jewelry?
Years of daily wear on a stainless steel substrate, and it does not tarnish because the coating is a ceramic compound rather than a metal. Salt-spray resistance is typically 48–96 hours under ASTM B117 against 8–48 hours for most electroplated finishes. What ends a PVD finish is abrasion at high-contact points, not corrosion.
Can PVD be applied over gold plating?
It is not standard practice and is not recommended. PVD bonds best directly to a clean, hard substrate; a soft plated layer underneath gives the ceramic coating something compliant to sit on, which undermines the hardness that makes PVD worth paying for. Choose one route.
Does PVD contain nickel?
No. PVD deposits a ceramic compound from the titanium nitride family, with no metallic barrier layer beneath it. On a 316L or titanium substrate the whole construction passes EN 1811 without a nickel-free barrier being specified, which is why it is the safest finish for EU-bound pierced-ear jewelry.
Why is PVD more expensive than electroplating?
It runs in a vacuum chamber for four to eight hours per batch, on equipment far more capital-intensive than a plating line, and the batch size is limited by chamber volume. Against that, a PVD finish at 0.3–1.0 µm outlasts a heavy electroplate at 2.5–5 µm, so on a cost-per-year-of-wear basis it is frequently cheaper.
Not answered here? All buyer questions →
Sources
Where the standards and legal limits quoted above are published, so a reader can check them at the issuer rather than taking this article's word.
| Designation | Published by | What it specifies |
|---|---|---|
| REACH Annex XVII entry 27 | European Union | Nickel release limits for articles in prolonged skin contact and for pierced-ear posts |
| EN 1811 | CEN | Reference test method for nickel release from articles in contact with the skin · not freely published; the binding limit is in REACH Annex XVII entry 27 |
| 16 CFR Part 23 | US FTC · eCFR | Jewelry Guides — the legal definitions of gold-filled, vermeil and gold-plated |
| ASTM B117 | ASTM International | Salt spray (fog) apparatus — the corrosion test coating hours are quoted against |
Every figure on this page traceable to one of these can be checked against the published standard rather than taken on our word.
Put this into a quotation
Send the design, the material and the quantity. You get an itemised price with the tooling separated out, the plating specified in microns, and the compliance route for your market.
- 01Reply within one working day, Guangdong business hours.
- 02Itemised cost sheet — mold quoted separately, not folded into the unit price.
- 03NDA on request before any file is shared.