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Generic sapphire crystal for Roger Dubuis square‑case models. Dimensions: 31.0mm × 31.0mm, total thickness 4.58mm, step thickness 2.58mm. Domed square shape with blue anti‑reflective coating. Synthetic sapphire (Mohs 9), scratch resistant. Aftermarket replacement for damaged original crystals.
Domed square with blue AR coating – reduces glare
Synthetic sapphire – excellent scratch resistance (Mohs 9)
Dimensions: 31.0 × 31.0 × 4.58 × 2.58 mm
High optical clarity
Affordable alternative to OEM crystal
| Parameter | Value |
|---|---|
| Shape | Domed square |
| Dimensions | 31.0 × 31.0 mm |
| Total thickness | 4.58 mm |
| Step thickness | 2.58 mm |
| Coating | Blue anti‑reflective |
| Material | Synthetic sapphire |
| Hardness | Mohs 9 |
| Type | Aftermarket |
Replacing scratched, cracked, or damaged original crystals on compatible Roger Dubuis square watches.
Professional watch repair and restoration.
Q1: Genuine Roger Dubuis part?
No, generic aftermarket.
Q2: Which models fit?
Fits RD square cases with 31mm crystal opening. Measure before ordering.
Q3: Is the coating blue?
Yes, blue reflective AR.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
Trusted by watchmakers worldwide.
Personalized sourcing support via [email protected] or WhatsApp +86 18620212114.
