The common colors of zircon are colorless, μπλε, κίτρινος, πράσινος, brown, κόκκινος, and purple. According to the degree of crystallinity, zircon can be divided into three varieties: high type, medium type and low type. The refractive index, density, and hardness value gradually increase from low type to high type. High-type zircon has a high birefringence, […]
