1mm Domed Mineral Watch Crystal Flat Bottom 15-50mm Repair Glass Replacement

1mm Round domed mineral glass watch crystal with a flat bottom and convex domed top surface. Sold as individual replacement crystals in a wide range of diameters and edge thicknesses to suit wristwatch and pocket watch repair. Select your exact diameter and thickness at checkout.

Specifications

• Material: Hardened mineral glass
• Profile: Domed top, flat bottom (single domed — not double domed)
• Edge finish: Polished / bevelled top edge
• Diameters available: 15.0 mm to 50.0 mm in 0.5 mm increments
• Edge thickness available: 1.0 mm In other listings I have / 1.5 mm / 2.0 mm / 2.5 mm / 3.0 mm available.

Compatibility & Sizing Guidance

This is a universal replacement mineral glass crystal. It will fit any round watch case whose bezel seat opening matches the selected crystal diameter. The diameter range of 15–50 mm covers the vast majority of wristwatches and open-face pocket watches. Brands and models known to use domed mineral glass crystals in sizes covered by this range include:

• Seiko — Cocktail Time, Presage, SNK series (SNK801, SNK803, SNK805, SNK809 and related refs, typically ~30 mm); note: Seiko's own Hardlex is a proprietary mineral glass — confirm your exact diameter before ordering a generic replacement
• Orient — Bambino series (all variants); domed mineral crystal is the standard fitment
• Citizen — various dress and vintage models across the 28–36 mm range
• Bulova — vintage and dress models; trade suppliers list domed mineral glass as a standard replacement type for many Bulova cases
• Omega — vintage models originally fitted with mineral glass (confirm exact diameter against your case)
• Tissot — various models across the diameter range; confirm your bezel seat measurement before ordering
• Hamilton — vintage wristwatches and pocket watches (Hamilton 917 and similar open-face cases cited in repair forums at ~41 mm)
• Fossil, Lorus, Ronda-movement watches — generic quartz wristwatches typically 28–36 mm
• Yema Rallygraf — domed crystal replacement at 32.5 mm diameter
• Vintage open-face pocket watches — domed crystals (PKH type) are the standard replacement across a wide range of ligne sizes

Important: The diameter is the binding dimension. Always measure the internal diameter of your crystal seat (bezel opening) with digital callipers before ordering. For a gasket/press fit, add approximately 0.1–0.2 mm to your measurement. For a cement/glue fit, match as closely as possible.

Note on increments: These crystals are available in 0.5 mm diameter steps.

Notes

• Mineral glass is harder and more scratch-resistant than acrylic (Hesalite/Plexiglass), but less impact-resistant than sapphire
• The domed top creates a slight magnifying effect on the dial — a desirable characteristic for dress and vintage-style watches
• Profile is low-to-mid dome; not a superdome. If dome height is critical, please message before ordering
• Sold individually — select the correct diameter and thickness at time of purchase

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