With snow setting, the decorative scheme is realised directly on the watch case, with only the artisan-jeweller’s own creative instinct and knowledge of his materials to guide his hand. One slip and the whole piece may be ruined. The setter places the diamonds one by one, side by side, skillfully matching differently proportioned stones in order to cover the entirety of the watch’s metal. Creative liberty of this kind requires skill and extreme attention to detail. The selection of the diamonds itself demands tremendous expertise: the most daring designs require the tiniest stones to melt into one another.