Crystal Care – Keeping your watch glass crystal clear


Watch Crystal RepairFine watches have either watch crystals made from synthetic sapphire, or tempered mineral glass watch crystals. Lower end watches may have plastic covering the watch dial. Mineral glass watch crystals are the typical watch crystal for a standard luxury watch. Outwardly, they are look the same as synthetic sapphire watch crystals but they can scratch much more easily (though not as easily as non-tempered glass or the plexi-glass used in non-luxury watches).

If your watch crystal is made from mineral glass, be very careful to keep your watch away from items such as keys, coins, tools, along with anything else that might scratch it. Store the watch in a soft cloth or in the case that it came in. Diamonds are the hardest natural surface, so be careful with your watch around jewelry that contains diamonds. Finally, mineral glass can shatter, so be sure not to drop it or allow it to absorb heavy shocks.

The highest quality Swiss watches use synthetic sapphire crystals. Synthetic sapphire is one of the hardest substances on earth. These crystals can sometimes be marked “scratch resistant”, because they are very difficult to scratch due to their hardness. Synthetic sapphire has a grade of “9” on the Mohs mineral hardness scale; therefore, only materials with a higher score should cause scratches. Diamonds are graded “10” on the Mohs scale, so use extra caution with diamond jewelry around your sapphire crystal.

If your watch crystal receives minor scratches, it may be possible for the crystal to be refinished back to its original condition. If the scratches are too deep, your watch may require a crystal replacement.  If your crystal does need to be replaced, make sure that you use an authorized watch repair center that uses parts approved by your watch manufacturer.


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You kept me so well informed on my Jaeger LeCoultre Reverso Sun-Moon wristwatch's repair status while my favourite wristwatch was in your care... I was most anxious to have it repaired, cleaned and returned safely to me. All of that happened exactly as you foretold. Thank you very much for your fine, peerless customer service.
John B. - Waynesboro, PA
My Cartier Roadster was delivered back to me today and I wanted to express my delight at the quality of the overhaul. The watch looks like new - the results far exceed the results I had when I have previously used Cartier service centres. I must congratulate you all on a great job done!
Roger H. - Houston, TX
The watch arrived in good condition yesterday. Thank you for your speedy service!
Frank L. - Muscle Shoals, AL
I would like to thank you for the expert service and repairs that your experts performed on my husband's 15+ year old Tag Heuer watch. The watch looks like new and is functioning perfectly. The entire process of sending the watch to you, being kept up to date with emails, and receiving the watch back in a timely manner was smooth and professional. I would recommend your service to anyone who owns a fine timepiece.
Florence T. - Philadelphia, PA
I can't tell you how much I appreciate the handling of my watch. Excellent service from the first contact thru to conclusion. Your process of communications was way above what can be expected. I will keep your name on file for future problems or more important, I will refer it to all who ask. Thanks again!
Jim H. - Janesville, WI
My Rolex arrived this afternoon….. It looks like new!!! THANK YOU, THANK YOU!!!
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