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This generic flat sapphire crystal is compatible with Chopard Happy Diamonds reference 203957, featuring a round shape with a 9.8mm diameter and 0.8mm thickness. Its flat design provides excellent optical clarity and scratch resistance for small watch glass replacement.
Flat shape minimizes optical distortion for clear dial viewing
0.8mm thickness offers balanced strength for compact cases
High hardness (9 Mohs) resists daily scratches and wear
Generic design – always verify diameter and thickness with original glass
Diameter: 9.8 mm
Thickness: 0.8 mm
Shape: Flat Round
Material: Synthetic sapphire
Compatible Reference: Chopard Happy Diamonds 203957
Replacement for Chopard Happy Diamonds ref. 203957 crystal
Suitable for miniature 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 203957 perfectly?
Only if your watch uses exactly 9.8mm flat round glass; measure before purchase.
3.Is 0.8mm thickness durable for such a small crystal?
Yes, sapphire is very hard; 0.8mm provides adequate strength for normal wear.
Fast worldwide shipping within 3 business days.
Competitive pricing on Seiko/Hattori calibers.
3,000+ watch movements and parts in stock.
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