Sapphire Lens Protector Crossdomed Watch Glass Anti-scratch

Why Choose sapphire crystal?

Chemically, sapphire is single crystal aluminum oxide (Al2O3), and is useful in a transmission range from 0.2 - 5.5µm

Sapphire crystal is extremely hard and scratch resistant. It is the hardest of the oxide crystals, being the next strongest material to diamond.

Because of its hardness (second only to Diamond), Sapphires are used in industrial applications such as components for watch crystals and movement bearings, scientific instruments, high-durability windows, and insulating substrates in special purpose solid state electronics

Sapphire is grown using a variety of methods. Standard grade Sapphire material is grown by Verneuil and Czochralski methods, whereas higher quality Sapphire is manufactured by the Kyropulus growth method.

Sapphire domed crystals features:

#1 Hardness level is 9, just next to diamond
#2 Highly clear

Sapphire crystal description:

Sapphire Crystal Application:

1. for high-class watches

2. for Led

3. for manufacturing equipment of semiconductors

4. for medical equipment

5. for beauty equipment

6. for jewelry pendant

7. other unique products

Sapphire watch crystal FAQ: