Walk into any jewellery shop and you'll see the term "18k gold plated" everywhere. It sounds premium. And visually, it can look identical to more durable alternatives. But the way a piece of jewellery is made determines how long it holds its finish — and the difference between gold plating and PVD gold coating is significant.
How Gold Plating Works
Traditional gold plating uses a process called electroplating. A base metal — usually brass, copper or silver — is submerged in a solution containing gold ions. An electrical current causes the gold to deposit onto the surface of the base metal in a thin layer. The result is a piece that looks like gold but is only gold on the very outside.
The problem is that this layer is thin and physically sitting on top of the base metal, not bonded to it at a molecular level. Friction, moisture, sweat and body chemistry all work against it. Most gold-plated pieces start showing wear in weeks to months, depending on the thickness of the plating and the quality of the base metal.
How PVD Gold Works
PVD (Physical Vapour Deposition) is a vacuum-based coating process. The base metal — in our case 316L surgical grade stainless steel — is placed in a vacuum chamber. Gold is vaporised at high temperature and the resulting particles bond directly to the stainless steel surface at a molecular level.
The coating produced is harder, denser and more adhesive than electroplated gold. It doesn't just sit on the surface — it becomes part of it. The result is a gold finish that resists water, sweat, heat and friction far more effectively than standard plating.
Side by Side
| Gold Plated | PVD Gold | |
|---|---|---|
| Base metal | Brass, copper, silver | 316L stainless steel |
| Coating method | Electroplating | Vacuum deposition |
| Bond type | Surface adhesion | Molecular bond |
| Waterproof | No | Yes |
| Tarnish-resistant | Limited | Yes |
| Hypoallergenic | Often not (nickel base metals) | Yes |
| Lifespan | Weeks to months | Years |
Why It Matters
If you wear your jewellery every day — through showers, workouts, sleep and sun — the coating method is the single most important factor in how long it holds its finish. Gold plating can look beautiful in the first few weeks. PVD gold still looks the same years later.
Both can be 18k gold. Both can look identical in product photos. The difference shows up in real life, in real conditions, over real time.