The common colors of zircon are colorless, màu xanh da trời, màu vàng, màu xanh lá, màu nâu, màu đỏ, 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, […]
