Chopard state on their website they only use exceptional clarity IF and VS, with colours D to G.
If the diamonds are free floating as per some happy variants, I’d bet they were probably VS G as there is a layer of crystal ‘hiding’ them, if visible on the case, perhaps higher quality.
The fact they don’t state would push me towards a lower spec, but they’re certainly not low end, unless they are differentiating between jewellery and watches without commenting, which would be very poor.
https://www.chopard.com/uk/chopard-diamonds/
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