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This generic flat sapphire crystal is compatible with Chopard Happy Diamonds models, featuring a round shape with a 16.7mm diameter and an ultra-thin 0.4mm thickness. Its flat design provides excellent optical clarity and scratch resistance for delicate watch glass replacement.
Flat shape minimizes optical distortion for clear dial viewing
Ultra-thin 0.4mm profile for precise low-profile case fitting
High hardness (9 Mohs) resists daily scratches and wear
Generic design – always verify diameter and thickness with original glass
Diameter: 16.7 mm
Thickness: 0.4 mm
Shape: Flat Round
Material: Synthetic sapphire
Compatible Series: Chopard Happy Diamonds
Replacement for Chopard Happy Diamonds models requiring 16.7mm flat round glass
Suitable for ultra-small and thin watch restoration
1.Is this an original Chopard part?
No, it is a generic compatible crystal, not OEM.
2.Will it fit my Happy Diamonds watch perfectly?
Only if your watch uses exactly 16.7mm flat round glass; measure before purchase.
3.Is 0.4mm too thin and fragile?
Sapphire is very hard but ultra-thin profiles can crack under bending force; handle with care.
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.









