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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Sapphire crystal is highly scratch-resistant, but it is not scratch-proof. The most useful precautions are to keep it away from hard or abrasive materials such as sand, granite, and nail files, and to handle the watch carefully around knocks and drops. When the watch is off your wrist, store it so the crystal is not rubbing against hard objects.
What can scratch a sapphire watch crystal?
Sapphire ranks high for hardness, which helps it resist everyday scratching. Rado gives a rating of 2,500 Vickers and specifically warns that materials as hard as or harder than sapphire can scratch it. Its examples include nail files, granite, and sand. The figure is Rado’s stated rating, not a guarantee against scratches or breakage. Rado’s FAQ
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IWC says sapphire is 9 on the Mohs scale, topped only by diamond. Hardness describes resistance to scratching; it does not mean a crystal cannot be damaged. IWC’s technical guidance
How to reduce the risk of scratches
Keep it clear of abrasive surfaces
Avoid rubbing or striking the crystal against granite, nail files, or similar hard surfaces. Sand is also worth avoiding: abrasive particles can come between the watch and another surface and cause contact. If a task is likely to bring the crystal close to hard or gritty material, take the watch off when practical. This applies Rado’s contact-avoidance advice; it is not a guarantee that any particular routine will prevent damage. Rado’s FAQ
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Store the watch separately
When you remove the watch, keep it apart from hard objects that could rub against the crystal. A soft pouch or an individual compartment in a watch case is a sensible way to reduce incidental contact, but the cited manufacturer guidance does not test these storage options or guarantee scratch prevention.
Be careful around impacts
Scratch resistance and impact resistance are different properties. Oris says sapphire is more impact-sensitive than mineral crystal, and Rado cautions that watches are not indestructible. Avoid knocks and drops where possible; a hard impact can damage a watch even when the crystal resists ordinary scratches. Oris’s explanation of sapphire and mineral glass · Rado’s FAQ
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Check before adding a protective film
A film is not established here as necessary or effective for every watch. If you are considering one, verify that it is designed to fit your exact model and will not interfere with the crystal or its surrounding components.
How sapphire compares with other watch crystals
Compare scratch resistance and impact sensitivity separately. Rado describes sapphire as considerably more scratch-resistant than mineral or acrylic glass; Oris notes its greater impact sensitivity compared with mineral crystal. Neither quality makes a crystal indestructible. Rado’s FAQ · Oris’s explanation
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What to do if the sapphire crystal is already scratched
Do not try to polish sapphire using a method intended for acrylic. Lorier support says a scratched sapphire crystal cannot be buffed out like acrylic and requires replacement. Ask the watch’s manufacturer or an authorized service provider to inspect it and advise on model-specific repair. Repair cost and warranty coverage depend on the watch and the applicable terms. Lorier support
Follow the operating instructions for your watch. IWC recommends regular water-resistance checks through an official agent; this matters especially if the watch has been damaged or serviced. IWC’s technical guidance
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Check the crystal type and warranty for your model
Use the manufacturer’s manual or official model documentation to confirm whether your watch has a sapphire crystal; Casio recommends checking its instructions rather than relying on an informal identification test. Warranty terms also vary by brand, model, and market. For example, Tissot’s US warranty page lists a scratched crystal as normal wear and tear excluded from that manufacturer warranty. That US example should not be treated as a universal rule. Casio’s sapphire crystal guide · Tissot’s US customer-service page
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