L'Heure du Diamant Round Medium, 35.75 mm diameter 18k white gold case and diamond-set 18k white gold pin buckle Prong-setting with 40 diamonds = 7,19 cts Crown: 1 diamond briolette = 0.06 cts Dial: semi-pavé dial with mother-of-pearl guilloché center Open sapphire case back Self-winding mechanical movement, 40 hrs power reserve