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This generic flat sapphire crystal is compatible with Chopard Happy Diamonds models, featuring a round shape with a 17.8mm diameter and 0.65mm thickness. Its flat design offers excellent optical clarity and scratch resistance for reliable watch glass replacement.
Flat shape minimizes optical distortion for clear dial viewing
0.65mm thickness balances strength and slim profile
High hardness (9 Mohs) resists daily scratches and wear
Generic design – always verify diameter and thickness with original glass
Diameter: 17.8 mm
Thickness: 0.65 mm
Shape: Flat Round
Material: Synthetic sapphire
Compatible Series: Chopard Happy Diamonds
Replacement for Chopard Happy Diamonds models requiring 17.8mm flat round glass
Suitable for small-size watch restoration and repair
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 17.8mm flat round glass; measure before purchase.
3.Is 0.65mm thick enough for durability?
Yes, sapphire is very hard; 0.65mm provides adequate strength for normal daily wear.
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.









