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This is a generic replacement sapphire crystal for the 18.7mm square case of the Cartier Santos collection (commonly found in the Santos Demoiselle ladies‘ watches), measuring 18.7mm (length/diameter) × 1.0mm (thickness) with a flat round profile. Made of synthetic sapphire glass (Mohs hardness 9), it offers exceptional scratch resistance and excellent optical clarity, serving as a direct substitute for a damaged or scratched original crystal, maintaining the watch’s elegant appearance.
Sapphire Crystal – Mohs 9, highly scratch-resistant and optically clear.
Flat Round Profile – Classic flat crystal, perfect fit for the Santos square case.
Precise Dimensions – 18.7mm diameter, 1.0mm thickness – exact case fit.
Generic Aftermarket – Non-original but manufactured to OEM specs for direct replacement.
Cost-Effective – Affordable alternative for repair or restoration.
| Parameter | Details |
|---|---|
| Compatible Models | Cartier Santos Demoiselle and square case models of same size |
| Type | Generic aftermarket |
| Material | Synthetic sapphire |
| Shape | Flat round |
| Diameter | 18.7 mm |
| Thickness | 1.0 mm |
Cartier Santos Demoiselle ladies‘ watches (e.g., W25016B8, W25017B8)
Other Santos square case models using the same 18.7mm flat round crystal
Replacement of damaged, deeply scratched, or aged original crystals
1. Is this a genuine Cartier crystal?
No. It is a generic aftermarket replacement, not original, but matches the Santos 18.7mm dimensions.
2. Will the original water resistance be maintained after installation?
Proper installation with a new gasket can restore everyday water resistance (typically 30m). A water resistance test is advised. (Gasket not included)
3. What should I pay attention to during installation?
Use a new gasket and UV adhesive, press evenly with a crystal press. Ensure no tilt. Professional installation is recommended.
4. Does this crystal fit Santos 100 or other larger models?
No. Larger Santos models use different crystal sizes. Measure your original diameter (18.7mm) to confirm.
5. Is a gasket included?
Usually not. The sealing gasket must be purchased separately. Confirm with the seller.
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