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When I hear the word sapphire crystal, there is a feeling of comfort. The name is good, and the value can be quite high. First of all, the watches of many high-end watches are made of sapphire. Prove that its use, answering the question of the top watch's face is mostly sapphire, we must first understand the nature of sapphire, why use it for the mirror, According to the chemical principle, one of the main components of sapphire is aluminum oxide, and it is the most occupied. Al2O3 is transparent at first, and it is colorless and transparent like glass, but it contains titanium oxide. And the iron oxide and blue, this is the cause of sapphire; some people will ask the company's gems that are embarrassing? In fact, the same is just because it contains chromium oxide, so it is called ruby. It is made by hand. Why is sapphire so high? It is also used in high-end watches, because it is naturally formed sapphire or artificial. The sapphire synthesized by the corresponding method is one of the hardest materials. It is comparable to diamonds, but it is a good thing, but it is not indestructible, like some silicon carbide, stone, and hard materials. Scratch sapphire lens can be scratched, so we have to look at whether the watch itself has been scratched or not. In the course of product transportation, some external factors and artificial factors such as collision, beating or improper operation will be Causes the mirror surface damage, even if the sapphire hardness is high, it will not cause any major damage, it will not be good to scratch a little bit, so be careful, pay attention to all unnecessary factors, sapphire crystal is applied to the advanced watch. It is also because of its advantages, we must love it.