Jun 20, 2025

Why choose a watch with a sapphire crystal?

A watch with sapphire crystal is much more than just an accessory: in the world of watchmaking, where every detail counts, the choice of crystal directly influences the perceived quality, durability, and elegance of your timepiece. When choosing a watch, it’s easy to be drawn in by the design of the case or the refinement of the movement, but the crystal protecting the dial remains an essential — and often underestimated — element.

What is sapphire crystal on a watch?

When we talk about sapphire crystal on a watch, we’re not referring to ordinary glass. This material is actually a synthetic crystal made from crystallized aluminum oxide at very high temperatures. The process, developed in the early 20th century, produces a crystal of exceptional hardness, reaching 9 on the Mohs scale (only diamond reaches 10).

This quality explains why sapphire watch crystal has become the standard for luxury watches since the 1990s. You’ll find it on automatic watches as well as on more understated models.

Why choose a watch with sapphire crystal?

Investing in a watch with sapphire crystal is not just about prestige. This material offers real advantages.

Scratch resistance and daily durability

The greatest strength of sapphire crystal is its incredible scratch resistance. The wear and tear of everyday life (rubbing against a desk, keys in a pocket, grains of sand, etc.) leaves marks on standard mineral glass. Sapphire, on the other hand, remains flawless even after years of use.

Watch enthusiasts know it well: avoiding even the slightest scratch on the crystal is key to long-lasting beauty and a sign of quality.

Clarity and optimal readability

Another major advantage: clarity. Sapphire watch crystal — especially when treated with anti-reflective coating (often found on high-end watches) — ensures perfect readability in all lighting conditions. Whether in bright sunlight or dim lighting, the dial remains perfectly legible.

Proof of quality and prestige

Choosing a watch with sapphire crystal is also a choice for quality. This material has become a signature of prestigious watches, whether automatic or quartz. An automatic men’s watch with sapphire crystal, or a women’s watch with sapphire crystal, reflects careful attention to detail and a high-end positioning.

Sapphire crystal vs. mineral glass: which one to choose?

Many enthusiasts wonder: should you choose a watch with mineral glass or sapphire crystal? Mineral glass, usually tempered to improve resistance, is more affordable. It withstands impacts well but remains vulnerable to scratches (Mohs 5 to 6). In contrast, sapphire crystal is virtually scratch-proof (Mohs 9), but more rigid — meaning slightly more prone to cracking under a strong impact.

In short: for a dress or city watch where elegance is key, sapphire crystal is a must. For a sport or outdoor watch, reinforced mineral glass can make sense.

Limitations and precautions with sapphire crystal

Even though sapphire watch crystal is extremely scratch-resistant, it remains a delicate material when it comes to direct impacts. It’s important to know its limitations.

Vulnerability to impacts

Due to its rigidity, sapphire watch crystal can crack if dropped onto a hard surface or subjected to a strong impact. This is why watchmakers recommend wearing your watch with care in daily life. If you’re likely to bump your watch often, a model with mineral glass might be more suitable.

Replacement cost of sapphire watch crystal

Despite its durability, sometimes a shock can damage sapphire. Replacing a sapphire crystal is a more delicate (and more expensive) operation than replacing mineral glass, as the material is harder to cut and polish.

Watchmakers recommend regularly inspecting your crystal: a scratch on sapphire is rare, but a chip along the edge or internal cracking will require replacement to maintain water resistance.

Is an automatic watch with sapphire crystal a must-have?

Finally, for lovers of fine watchmaking, nothing beats an automatic watch with sapphire crystal. The care put into such a timepiece is evident in every detail: quality of the movement, case finish, and of course, choice of crystal.

Choosing an automatic watch with sapphire crystal, like the Mods Daytona, Yacht Master, or Arabic Dial, means choosing a timepiece you can proudly wear for years, without fear that time will diminish the beauty of the dial. Enthusiasts know: the pleasure of owning a high-quality watch, down to its crystal, is unmatched.