Anodized, PVD or Plated? Titanium Piercing Jewelry Finishes Explained

The three finishes at a glance

A gold-colored titanium stud, a gold-plated steel stud and an anodized gold titanium stud can look identical in a listing photo. They are not the same product, they do not fail in the same way, and only one of them is on the list of materials piercers accept for a fresh piercing.

The difference is not the color. It is whether anything was added to the metal, and if so, what.

Anodizing: color with nothing added

Titanium already carries a thin, self-forming oxide layer. Anodizing passes current through the piece in an electrolyte bath and grows that layer thicker. Nothing else is deposited — no dye, no pigment, no second metal.

The color comes from thin-film interference. Light reflects off two surfaces at once: the outside of the oxide and the metal underneath it. The two reflections recombine, some wavelengths reinforce and others cancel, and what survives is the color you see. Thickness decides which wavelengths survive, and voltage decides thickness. It is the same physics as the color in a soap bubble or an oil film on wet asphalt.

Because the color is a thickness and not a substance, anodized titanium behaves differently from anything coated. There is no layer to chip off and no different metal waiting underneath. Abrade it and you are still touching titanium.

What anodizing can and cannot do

Raising the voltage walks the color through a repeating sequence — roughly bronze, then purple and blue, then a pale near-silver, then yellow-gold, then pink and magenta, then blues and teals again, then greens. Published voltage charts disagree with each other by a wide margin, because the result also depends on the electrolyte, the alloy, the surface finish and the temperature. Treat the order as real and any specific voltage number as a starting point, not a constant.

Two things are worth knowing about the ends of that sequence:

• Gold is achievable. A warm bronze-gold appears low on the scale and a brighter yellow-gold appears higher up. A gold-colored titanium piece is not automatically coated.
• Black is not. Interference colors are produced by canceling some wavelengths, and a true black would require absorbing all of them. The APP makes this point directly when it describes niobium: “unlike titanium, it can be anodized black.” Black titanium body jewelry is a coating, normally titanium aluminum nitride.

Rose gold sits in between. Anodizing does produce a pink-rose interference tone, but it is iridescent and shifts with viewing angle. The flat, opaque, consistent rose gold most people picture is normally a titanium carbonitride coating rather than anodizing.

Anodized color is not permanent. The APP puts it plainly: anodized titanium and niobium “may fade due to body chemistry or when worn in friction-prone areas, but this is not harmful.” Abrasion thins the oxide, and because the color is the thickness, a scuffed piece can visibly shift hue without losing anything you would call material. A studio can usually re-anodize a piece to restore or change it — with the practical catch that the process moves up the scale easily and back down it only by stripping the oxide and starting over.

We cover the color mechanism in more depth in our guide to anodized titanium colors and whether they fade.

PVD: a ceramic film that is not actually gold

PVD stands for physical vapor deposition. It appears in the material description of a large share of gold-colored body jewelry sold online, including a large share of ours, and it is almost never explained. Here is what the process is.

The jewelry goes into a vacuum chamber. A solid source material — titanium, zirconium — is vaporized by an electric arc or by sputtering. A reactive gas, usually nitrogen, is introduced. The vapor and the gas react, and the resulting compound condenses onto the jewelry atom by atom as a thin, hard ceramic film.

The important consequence: the gold color in jewelry PVD is usually not gold. It is a nitride ceramic that happens to be gold-colored.

The compounds behind common PVD colors in jewelry

Decorative PVD films are thin — published figures for jewelry sit in the region of 0.1 to 1 micron, with industrial titanium nitride coatings going up to around 5. That sounds fragile next to a gold plate, and in thickness it is. In hardness it is not remotely comparable.

Titanium nitride measures somewhere around 1800–2100 on the Vickers scale. Soft gold electroplate is often quoted at a hardness in the same range as a human fingernail, and even cobalt-hardened “hard gold” plating lands an order of magnitude below the ceramic. Coating houses summarize the gap as roughly ten times, which is the right scale to carry in your head.

Titanium nitride is not an exotic material. It has been used as a surface on orthopedic implants since the 1980s, chosen for exactly the properties that make it useful on jewelry: chemically inert, hard, and slow to shed particles.

Does PVD fade? Tarnish and abrasion are different questions

“Never fades” is a claim you will see attached to PVD constantly, including in places we have written it ourselves. It collapses two different questions into one, and it is only half right.

Does PVD tarnish? No, in any ordinary sense. Tarnish is a chemical reaction — silver turning black as it forms silver sulfide, copper alloys going green. A nitride ceramic is chemically inert. It does not react with sweat, air, chlorine or cosmetics, and it will not discolor sitting in a drawer.

Does PVD wear off? Yes. It is a film, and films abrade. Wear shows first exactly where you would expect mechanical contact to concentrate: threaded joints, ball closures, the back of a flat disc that presses against skin, and anywhere the piece rubs a phone, a pillow or a seatbelt. Vendors who sell the process put realistic daily-wear life at a few years rather than forever, and the equipment manufacturers are careful to note that decorative films are specified for appearance, not for wear resistance.

So the accurate sentence is: PVD does not tarnish, and it does not chip the way soft plating chips, but it does abrade at contact points over a period of years. Anyone promising permanence — us included, historically — is overselling it.

The difference that matters for body jewelry is what is underneath when it does wear. A ceramic film on implant-grade titanium wears down to implant-grade titanium. A gold plate on unspecified base metal wears down to unspecified base metal. That is a cosmetic problem in one case and a materials problem in the other.

Plating: what the FTC numbers actually mean

Plating is the oldest of the three and the most heavily regulated in the US, because it is the one where the marketing language has historically outrun the substance. The FTC Jewelry Guides at 16 CFR Part 23 set out what each term legally requires.

16 CFR 23.3 and 23.4. Figures are legal minimums, not typical values

Three things in that table repay a second look.

0.175 microns is very thin. It is the legal floor, and a piece sitting on it is within a rounding error of being decorative. France requires three microns before a piece may be called gold plated; the US floor is roughly seventeen times more permissive. A listing that says “18k gold plated” and nothing else has told you the karat of the layer and nothing about how much of it there is.

Vermeil has a base-metal requirement, and it is specific. The base must be sterling silver. Gold over brass or over steel is not vermeil in the US no matter how it is marketed. The same section also requires disclosure when a nickel layer sits between the silver and the gold — which tells you that arrangement is common enough to legislate for.

“Gold tone” is not a weaker version of gold plated. It is outside the scheme entirely. It describes a color and carries no obligation about what is producing that color or what lies under it.

Which finishes belong in a piercing that is still healing

This is where the three processes separate sharply, and it is worth being precise about who says what, because the sources do not all cover the same ground.

Anodizing: explicitly accepted

The Association of Professional Piercers addresses it directly in its guidance on jewelry for initial piercings, stating that titanium can be anodized into different colors “without affecting the safety.” That is consistent with the physics. Nothing was added, so there is nothing new for the tissue to meet.

Gold plated, gold filled and vermeil: explicitly rejected

The APP is equally direct in the other direction: plated, filled and overlay or vermeil jewelry is not acceptable for fresh piercings, on the grounds that a gold surface measured in millionths of an inch can wear or chip off. Its formal Initial Jewelry Standards exclude gold filled and overlay or vermeil outright, and allow a plated finish in one narrow case only: where the plating material is itself approved by that standard and sits over solid 14 karat or higher gold that is free of nickel and cadmium.

At least one US state has written the identical rule into regulation. New Mexico’s body art rules (16.36.5 NMAC) list acceptable materials and then state that gold plated, gold filled and overlay or vermeil jewelry is not acceptable for a fresh piercing.

PVD: outside the list, but not named in it

Here we have to be careful, because it would be easy to overstate this. The APP does not mention PVD. Neither its public guidance nor its Initial Jewelry Standards refer to PVD, titanium nitride, or any coating other than gold. Oregon’s materials rule (OAR 331-900-0105) does not mention coatings at all — neither permitting nor prohibiting them. We found no US regulation that addresses PVD either way.

What is true is structural. These standards are closed lists: they enumerate the materials that are acceptable and everything else is outside. A PVD coating is not on any of those lists, so jewelry carrying one is outside the specification for an initial piercing — not because a rule names it and bans it, but because no rule names it and lets it in. The APP’s one exception to that, noted above, is a plating allowance for approved materials over solid 14k-plus gold — a nitride ceramic over titanium is neither of those things, so it does not reach the carve-out either.

The mechanism behind that is not toxicity. Titanium nitride has a long record as an implant surface. The concern raised in the implant literature about thin hard coatings is adhesion — a film under stress can abrade or delaminate at its weakest point, and the failure exposes whatever the substrate is. That is the same objection the APP raises about gold plating, phrased in ceramics rather than in karats. A healing channel is a wound, under constant friction, with jewelry being handled and turned. It is the worst possible environment for any coating, however good.

How the four finishes sit against the published standards

The practical version, and the one we would give in a shop: heal in bare or anodized implant-grade titanium. Add gold once the piercing has settled. That is not a compromise position, it is what the standards actually support, and it happens to be cheaper.

How to tell which one you are buying

The vocabulary in listings is deliberately slippery, and colors are worth more than plain finishes, so the incentive runs one way. A few checks separate the three quickly.

• Look for a substrate, not an adjective. “Gold titanium” tells you nothing. “Gold PVD on ASTM F136 titanium” tells you the coating, the process and the metal underneath. A seller who knows will say all three.
• A named standard is the signal. ASTM F136, ASTM F67, ASTM F138, ISO 5832. A finish claim with no standard number attached to the base metal is a claim about the top micron of a piece you are going to put through your body.
• Black means coated. Titanium does not anodize black. If a titanium piece is black, a coating is involved, whatever the listing says.
• An opaque, consistent rose gold usually means coated too. Anodized rose is iridescent and shifts as you turn it.
• “Gold tone”, “gold color” and “gold finish” are not claims. They are descriptions of appearance with no legal content behind them.
• Ask what happens when it wears. Any coating wears eventually. The question worth asking is what is exposed when it does, and the answer should be a material with a standard number.

If you want to check a piece you already own, our guide on how to check jewelry is really implant-grade titanium covers the tests that are actually worth running.

Common questions

Standards and regulations quoted here were read on 28 September 2026 and can change. This page describes materials, not medical advice — your piercer has seen your piercing and we have not, so check with them before changing jewelry in one that is still settling.