High hardness sapphire glass. Watch glass thickness : about 2.5mm.
Sapphire Glass Watch Crystal 1.2mm Flat Round Watch Lens 18mm-42mm Mineral Glass
Sapphire Watch Glass Crystal Flat - 1.0mm Thickness - Diameter 31.0mm - 34.9mm
Sapphire Watch Glass Crystal Flat - 0.8mm Thickness - Diameter 27.0mm - 30.9mm
Sapphire Watch Glass Crystal Flat - 2.4mm Thickness - Diameter 17.0mm - 45.0mm
2mm Sapphire Glass 20-40mm Clear Flat Round Crystal Lens Repair Tool Watch Parts
Sapphire Crystal Round Flat 1.0mm Glass Watch Lens Mirror 13mm-45mm Repair Parts
