Description
What is Sapphire ?
Sapphire, Diamond, Ruby, Opal and Emerald are the five most precious gems in the world, and Sapphire is one of the highly stable substances of gems. Synthetic Sapphire is monocrystal, its outstanding hardness, excellent light transmittance and high resistance make it often used in high-tech fields such as national defense, aviation, lectric appliances, etc