- 1/3 carat diamond simple and elegante 18k and platinum solitaire for ladiesUS$ 938.00Total diamond weight .34ctFrances 1/4 carat diamond ring solitaire for ladies in platinumUS$ 938.00Total diamond weight .23ctEklo Three-Stone Rubis and Diamond Platinum Ring With 18K Rose Gold Heart SettingUS$ 975.00Total diamond weight .30ct