Sapphire Watch Glass for scratch-proof crystal faces of Watch
  • Extremely hard, strong and wear resistant
  • Excellent thermal conductivity/heat resistance
  • Exceptionalchemical stability
  • Excellent transmission bandwidths (UV to IR)
  • Blank substrates, AR-coated pieces, and precision windows are available
  • Sapphire is a synthetic crystal (aluminum oxide Al2O3). Synthetic Sapphire exists exceptional performance of high hardness, high strength, scratch resistance, and chemical durability. Sapphire is second hardest minerial and ranks a 9 on the Mohs scale, that mean almost nothing other than diamond is able to scratch the sapphire watch screen. Watch glass made of synthetic sapphire offers durability, toughness, and aesthetic appearance.

    HYT SAPPHIRE supply a wide range of sapphire watch glass with various shapes and sizes to fit different watch cases. Including flat sapphire watch glass, dome sapphire watch glass, AR coating sapphire watch glass, and custom shape, our Sapphire watch glass series feature brilliant reflective quality, superior strength and clarity, highly scratch and impact resistant.


    Specifications of Sapphire Watch Glass

    Material Sapphire (Al2O3)
    Diameter 2mm ~ 100mm, customize available
    Diameter Tolerance +/-0.05 mm
    Thickness 0.1mm ~ 150mm, customize available
    Thickness Tolerance +/-0.01 mm
    Surface Quality 40/20, 20/10 S/D
    Surface Accuracy 0.5-0.2
    Clear Aperture >90%
    Parallelism 30 arc sec
    Chamfer/Bevel < 0.25mm*45°
    Coating No/AR coating or customized available

    Price list and specification index

    If need other specifications and quantities products, please contact us(
    Part Number Dia. Thickness Coating Price
    Watch-Sapphire-001 40.00 mm 5.00 mm Uncoated contact us


  • Anti-reflection coatings are also available at your specified wavelength.
  • Sapphire transmits ultraviolet light, but sometimes exhibit fluorescence when subjected to powerful ultraviolet sources. For this reason, they are best suited for use with visible to infrared wavelengths.
  • Be sure to wear laser safety goggles when checking optical path and adjusting optical axis.
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    HYT Sapphire Optics focused on the precision manufacturing of high-quality sapphire components, and strived to create sapphire optical windows, fine holes, rods, balls, tubes and other automated, intelligent products and chemical production line.

    Copyright © 2002 HYT Sapphire Optics Co,.Ltd.