Sapphire crystal is a synthetic material that is made from process (melt-seeding-put down-automatic growth-complete-annealing) of crystallising pure aluminium oxide at very high temperatures.
Sapphire Crystal Feature:
1# Hardness level is 9, just next to diamond
2# Highly clear
3# Smooth edge treatment, no scratches
4# The surface is smooth
5# High temperature resistant, scratch-proof, wear-resistant
6# Thinner and Stronger than Standard Glass Windows
7# Transmits Wavelengths Ranging From UV to Mid-Infrared
8# Features Extreme Surface Hardness and Chemical Resistance
Sapphire Crystal application:
1# High-class watches
2# Mobile phone
3# LEDs
3# Medical Instruments
4# Optical Communication
5# Camera Lens
6# Jewelry
Nowadays Sapphire crystals are very popular with famous brand watches because of it's perfect fectures.Sapphire watch case is also gradually enter into market.