Principle of sapphire annealing

The principle is that at high temperature, the bond energy between the atoms of the ore will become lower, so that the existing impurities and defects will shift or disappear, thus restoring the original state of the crystal. At the same time, annealing will eliminate the stress inside the gem, make it more stable and durable, and enhance the compression resistance of the gem. Sapphire annealing is to eliminate these defects and impurities and improve the optical transparency and physical properties of sapphire. Annealing treatment is to heat the sapphire sample to a specific temperature, keep it for a certain time, and then slowly cool it to improve and restore its crystal structure and transparency. Sapphire annealing is to eliminate these defects and impurities and improve the optical transparency and physical properties of sapphire. Annealing treatment is to heat the sapphire sample to a specific temperature, keep it for a certain time, and then slowly cool it to improve and restore its crystal structure and transparency.