Published on
Table of Contents
The short answer: PVD gold-tone bonds to the steel case at a molecular level and is significantly harder and more durable than standard gold plating. All Söner gold watches use a vacuum-deposited PVD process, producing a finish that handles daily wear without the premature wear-through common in electroplated alternatives.
What Is PVD Gold Coating?
PVD stands for Physical Vapour Deposition. It is a process where a solid material is vaporised in a vacuum chamber and deposited onto the watch case as an ultra-thin, highly adhesive layer. The result is a gold-tone finish that bonds to the steel at a molecular level rather than sitting on top of it the way electroplated gold does.
Standard gold plating uses electrodeposition to apply a layer typically between 0.5 and 2.5 microns thick. It looks identical to PVD coating when new, but the adhesion is weaker and the layer is soft. High-contact areas such as the back of the case, the clasp, and the lug ends wear through within a few years of daily wear. PVD coating is harder, more durable, and considerably more resistant to the friction that daily wear produces.
Söner specification: The Nostalgia and Amorous collections use PVD gold-tone over 800HV hardened surgical steel, which is four times more scratch-resistant than standard 316L stainless steel. The Legacy and Momentum collections use PVD gold-tone over surgical-grade steel. All four collections use the same vacuum-deposited PVD process, producing a finish significantly more durable than standard electroplated gold.
How PVD Coating Is Applied
The process takes place in a vacuum chamber at low pressure. The target material is vaporised using one of three main techniques: sputtering, arc evaporation, or electron beam evaporation. The vaporised atoms travel through the vacuum and condense onto the watch case surface, forming a dense and uniform layer.
Because the deposition occurs in a vacuum with no liquid chemicals involved, the coating is exceptionally pure and free from contamination issues that can affect wet electroplating. The vacuum environment also means no harmful chemical waste is produced, making PVD more environmentally responsible than traditional plating methods.
Three PVD Techniques
- Sputtering: high-energy ions bombard the target, releasing atoms that settle on the watch surface
- Arc evaporation: electric arc vaporises the target, depositing a uniform coating via ion bombardment
- Electron beam evaporation: electron beam replaces the arc for precise, controlled deposition
What the Process Controls
- Layer thickness and uniformity
- Final colour tone and consistency
- Adhesion strength to the substrate
- Surface hardness of the finished coating
- Chemical purity of the deposited layer
PVD vs Gold Plating vs Solid Gold
| Factor | PVD Gold-Tone | Gold Plating | Solid Gold (18k) |
|---|---|---|---|
| Adhesion method | Molecular bonding in vacuum | Electrochemical deposition | Solid material throughout |
| Typical thickness | 2 to 5 microns | 0.5 to 2.5 microns | Full case material |
| Hardness | Very high | Moderate | Low — scratches visibly |
| Wear pattern | Fades gradually and evenly | Wears through at contact points | Scratches, polishes back |
| Daily wear lifespan | 5 to 10 years with care | 1 to 3 years at contact points | Indefinite with servicing |
| Environmental impact | No chemical waste | Uses chemical baths | Mining impact |
| Price range | Accessible | Very accessible | High to very high |
The key practical difference between PVD and gold plating is the wear pattern. Gold plating wears through unevenly, exposing patches of base metal at the case back, lug ends, and clasp while the dial side remains intact. PVD coating wears more gradually and evenly because the adhesion is uniform. On a daily-wear watch this is the difference between a watch that looks patchy after two years and one that still looks considered after five.
How Long Does PVD Coating Last?
With daily wear and reasonable care, a quality PVD gold-tone coating will last between 5 and 10 years before showing meaningful wear. Signs of wear typically appear first at the highest-contact points: the back of the case where it rests against the wrist, the clasp mechanism, and the lug ends where the strap attaches. On a well-maintained watch this happens gradually over years rather than suddenly.
A watch that spends significant time in a drawer rather than on the wrist will show minimal coating wear for decades. A watch worn daily in physically demanding conditions will show wear faster. Both outcomes are expected and do not represent a product defect.
How to Care for a PVD Gold Watch
Do This
- Wipe with a soft lint-free cloth after wearing
- Clean with mild soapy water and a soft toothbrush
- Rinse with clean water and dry thoroughly
- Store in a watch box or pouch when not wearing
- Remove before contact sports or heavy manual work
Never Do This
- Use toothpaste — contains abrasives that scratch PVD
- Use ultrasonic cleaners on PVD surfaces
- Expose to bleach, acetone, or strong cleaning agents
- Store alongside other metal objects that could scratch
- Leave sunscreen, perfume, or sweat sitting on the surface
Is PVD Coating Safe for Sensitive Skin?
Yes. PVD coating over surgical-grade steel is hypoallergenic. The coating itself does not contain nickel in contact with the skin, and surgical steel is chosen for its biocompatibility. Standard gold plating over base metal alloys can cause reactions in nickel-sensitive wearers because the plating wears through to the base metal. PVD over surgical steel eliminates this risk.
Frequently Asked Questions
Is PVD gold coating better than gold plating?
Yes, for daily wear. PVD coating bonds to the steel at a molecular level and is harder and more wear-resistant than electroplated gold. It lasts longer, wears more evenly, and resists scratching better. Gold plating is cheaper to apply but wears through at contact points within a few years of daily use.
Does PVD gold coating scratch?
PVD coating is resistant to scratching but not scratch-proof. Light surface marks from everyday contact are minimised by the coating hardness. Deep scratches from sharp objects or hard impacts can mark the surface. Keeping the watch away from abrasive materials and storing it properly extends the coating appearance significantly.
Can PVD coating be repaired?
PVD coating cannot be polished back the way solid gold can. Once worn through, the only option is re-coating the case, which requires stripping the existing coating and reapplying it in a vacuum chamber. This is a specialist service available from some watch service centres. Söner's 10-year warranty covers manufacturing defects but not normal wear from daily use.
How do I clean a PVD gold watch?
Use mild soapy water and a soft toothbrush for the case and bracelet. Rinse with clean water and dry with a lint-free cloth. Avoid toothpaste, abrasive cloths, ultrasonic cleaners, and harsh chemicals. A soft microfiber cloth for daily wiping after wear is the single most effective maintenance habit.
What is the difference between the Nostalgia/Amorous and Legacy/Momentum steel?
The Nostalgia and Amorous collections use 800HV hardened surgical steel, which is four times more scratch-resistant than standard 316L stainless steel. The Legacy and Momentum collections use surgical-grade steel. All four collections use the same vacuum-deposited PVD gold-tone coating process. The hardened steel in the Nostalgia and Amorous adds an additional layer of scratch resistance at the substrate level.
All Söner gold watches use vacuum-deposited PVD gold-tone over surgical steel, sapphire crystal with anti-reflective coating, and carry a 10-year international warranty as standard. Swiss and Japanese movements. From $385.
Browse the Gold Collection
