The optical lens which is  made of sapphire crystal and has high luster and excellent hardness. It comes in a transparent design . With a high electrical resistance along with anti-impact and anti-scratch properties, this sapphire glass lens launts a neat and clean appearance and makes an excellent component for all kinds of optical instrument. 

• High-quality sapphire crystal lens
• With anti-impact and anti-scratch features.
• With high electrical resistance.
• Features great thermal stability.
• With high optical production rate.
• Features a high melting temperature of 2030 °C.
• With a high hardness of 9 Mohs, which is second to diamond.
• Purity: 99.99%.
• Density: 3.98-4.1g/cm2.
• Compressive strength: 21000kg/cm2.
• Flexural strength: 4000kg/cm2.
• Infrared transmittance: 85%.
• Dielectric constant: 7.5 - 10.5.
• Place of origin: China.
• Color: transparent or custom-made.