How to identify the material of watch glass

- Jan 30, 2018-

How to identify the material of watch glass

The material of the mirror is divided into sapphire glass, mineral glass, synthetic glass three categories:

       Sapphire glass: The physical and chemical properties of this watch are very stable, and the hardness is very high. Second only to diamond, can easily deal with scratches, wear, erosion. But hesitant hardness is too high, toughness is not good, very afraid of throwing. But many high-end watches will use this watch mirror!


       Mineral glass: This material is characterized by the mirror has a strong anti-vertical strike capability, abrasion resistance is also very good. This watch is widely used in the mid-range watch, and the general military watch the mirror will use this high-hardness glass.


       Synthetic glass: also called plexiglass, there is a name called "Alex glass." This material is not very good table mirror hardness, more prone to scratches. But it is very self-willed, not easy to smash. The cost of synthetic glass is very low, many low-end watches are generally used this watch mirror.


How to identify the material of watch glass

       First, you can tap the mirror to judge the material of the crystal from the sound. Acrylic mirror will emit a plastic-like sound, while the mineral glass sound is thicker. Judging from the weight point of view, acrylic mirror the lightest, sapphire mirror the heaviest. In addition, the thermal conductivity of sapphire well.