Will the sapphire crystal glasses be broken?
Sapphire is very hard, only lower than diamond, and it is generally believed that sapphire glass will never shatter. Actually this idea is wrong. Even when some people buy a watch, they are satisfied when they hear the seller say it is a sapphire crystal. It is undeniable that sapphire does have good wear resistance, but the sapphire mirror is very brittle, like the windshield of a bus, if you choose the center, you can break it with a hammer.
How many parts are in the watch? Ordinary watches have dozens to hundreds of parts, especially watches with various functions. These parts consist of a movement that sits in a small space that covers the dial. When nothing is covered, the entire watch appears to be ‘exposed’ to the outside. Over time, the water vapor and dust generated in the air can easily corrode and stain the entire watch parts. So far, most high-end watches have used sapphire crystals. To prevent the watch from entering air, a waterproof rubber ring is reinforced between the case and the crystal. (Of course, when replacing the damaged sapphire crystal, the waterproof performance of the watch will also be tested, and some waterproof measures will be taken).
Many times, the watch may be scratched by hard objects such as keys and nail clippers after a period of use. Minor scratches can be used for two days temporarily, if the crystal is severely damaged, only the sapphire crystal can be replaced. But some watches like acrylic glass can simply be polished if they have minor scratches.
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