As we all know, the watch mirror refers to the transparent lens on the face of the watch, which is used to protect the dial. But in fact, the watch mirror did not exist before the 16th century, when the clock was just invented, the fragile dial is only covered with a cover or even directly exposed. Only later did there appear "", "", "", "", "", " watch mirrors, the vast majority of high-end watches are sapphire watch mirrors. Today, there are three main types of mirror materials, acrylic, mineral glass, and sapphire, first let's have a brief understanding. Acrylic transparent silicate glass, fragile, easy to produce scratches, in the 1920s will soon be replaced by non-slip wear-resistant quartz glass. The famous acrylic entered the historical stage in the 1940s, also known as PMMA or plexiglass, from the English acrylic (acrylic plastic), the chemical name is polymethyl methacrylate. Compared with quartz glass and silicate glass, it is not easy to break, and acrylic texture is soft, high plasticity, so it can be easily post-processing, using sandpaper or file can be modified. But this material is very easy to scratch, slightly less transparent, mostly used for low-end watches.

With the development of the glass industry, there has been a kind of mineral glass, also known as artificial glass, made of silicon and lead oxide (or potassium oxide, barium oxide, etc.) boiled together. As a mirror, this material is generally processed by polishing and strengthens the hardness, and the mirror has strong permeability and strong resistance. Mohs hardness of about 4 to 6, generally used for the production of low-end watches.

What are the advantages and disadvantages of sapphire glass sapphire mirror? The hardness of sapphire glass mirror is second only to diamond hardness, its advantages are high density, not easy to scratch, good light, high temperature resistance, higher wear resistance than mineral glass mirror and acrylic mirror. The disadvantage is that it is not shock-proof, although sapphire is very hard, it is also very "brittle" once it encounters the impact of hard objects, it may break instantaneously.

In short, the coating can reduce the reflection of the gem watch mirror, improve the transmittance, and also correct the color difference produced by the gem watch mirror. In addition, it should be reminded that the coating can be wiped off, so do not use rough things to clean. How to identify sapphire mirror? Many watch friends struggle to identify whether the watch they bought is a sapphire watch mirror. First of all, we must know a truth, in the vast majority of areas, folk recipes are unreliable! The methods of breathing, dripping, marking, listening etc. that circulate on the Internet are really not so reliable! You have nothing to do with a knife, metal to scratch the sapphire mirror try, don't forget that many table mirrors have coating! Just one request. Don't do it. Regular brand watches, if they use SAPPHIRE mirror, generally have a special logo on the dial or recrystal on the back cover, or are represented by a diamond-shaped logo. In short, the coating can reduce the reflection of the sapphire mirror, improve the transmittance, and also correct the color difference generated by the sapphire mirror. In addition, it should be reminded that the coating can be wiped off, so do not use rough things to clean. How to identify sapphire mirror? Many watch friends struggle to identify whether the watch they bought is a sapphire watch mirror. First of all, we must know a truth, in the vast majority of areas, folk recipes are unreliable! The methods of breathing, dripping, marking, listening etc. that circulate on the Internet are really not so reliable! You have nothing to do with a knife, metal to scratch the sapphire mirror try, don't forget that many table mirrors have coating! Just one request. Don't do it. Regular brand watches, if they use SAPPHIRE mirror, generally have a special logo on the dial or recrystal on the back cover, or are represented by a diamond-shaped logo.

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