When you wear a watch every day, small scratches on the watch crystal are pretty common. With good care you can reduce them, but accidents happen. Today’s watches mainly use three types of crystals: acrylic, mineral, and sapphire. All of them protect the dial, but each material has different levels of durability and clarity.
1. Acrylic Crystal
Acrylic is a form of plastic commonly found in vintage watches and some modern designs.
Pros: Flexible, impact-resistant, inexpensive.
Cons: Scratches easily and has lower clarity than glass.
The advantage of acrylic is that light scratches can be polished out, so you don’t always need to replace the crystal unless the damage is deep.
2. Mineral Crystal
Mineral crystal is a type of hardened glass. Impurities are removed during manufacturing, resulting in greater clarity and durability than acrylic.
Pros: More scratch-resistant than acrylic, affordable, widely used.
Cons: Still not scratch-proof and more likely to crack from impact.
Mineral crystal has a Mohs hardness of around 5. It performs well for everyday use but doesn’t match sapphire’s durability.
Discover durable mineral-crystal options from ADDIESDIVE, like AD2508
3. Sapphire Crystal
Sapphire crystal is considered the premium standard for modern watches.
Pros: Extremely scratch-resistant, high clarity, premium feel.
Cons: More expensive and may crack under very strong impact.
With a Mohs hardness of 9, sapphire is one of the toughest materials used in watchmaking—second only to diamond. It is about three times stronger than mineral glass and twenty times stronger than acrylic. In everyday use, sapphire crystal is almost impossible to scratch.
Explore ADDIESDIVE’s sapphire-crystal watches, including AD2093、K004
AD2093
What About Anti-Reflective Coating?
Anti-reflective (AR) coating is a thin multi-layer film applied to the crystal to reduce glare and improve readability.
It works similarly to protective tint on car windows.
There are two types:
1.Double-sided AR: Coated on both the inside and outside.
2.Single-sided AR: Applied only on the inner surface.
Both improve clarity, especially under strong light, though double-sided AR offers slightly better performance.
Final Thoughts
Choosing the right watch crystal depends on your lifestyle.
1. Acrylic is budget-friendly and easy to polish.
2. Mineral offers solid performance at a good price.
3. Sapphire crystal provides the highest durability, scratch resistance, and a premium look.
If you want the best long-term protection and clarity, sapphire crystal is the top choice for modern watches.
