Jaquet Droz The Heure Celeste - J005024538 White mother-of-pearl dial. 18-carat white gold case and spheres, set with 272 diamonds, 103 blue sapphires, 76 pink sapphires and 129 amethysts, buckle set with 24 diamonds, totaling 1.19 carat. Self-winding mechanical movement. Power reserve of 68 hours. Diameter 41 mm.