Cartier Ballon Blanc De Cartier Watch - 24.2 mm Pink Gold Case - Mother-Of-Pearl Diamond Dial - WE90205724. 2mm 18K pink gold case brilliant cut diamond at 4 o'clock, 8. 44mm thick, sapphire back, 18K pink gold bezel brilliant cut diamonds at 4 o'clock, sapphire crystal, mother of pearl dial with brilliant cut diamond at 4 o'clock, quartz movement with blued steel sword shaped hands, 18K pink gold bracelet. Water resistant to 30 meters.