It required extreme perceptiveness from Piaget's designers to imbue the harmonious proportions of this model with radiant sobriety. The diamonds brilliantly highlight the perfect symmetry of the rose-gold case. At the heart of this icon, the Piaget 430P ultra-thin movement, a mechanical queen in a realm of finesse. Altiplano watch, 38 mm. 18 carat rose-gold case set with 78 brilliant-cut diamonds (approx. 0.7 ct). Manufacture Piaget 430P ultra-thin, hand-wound mechanical movement.