- 1/4 carat diamond simple and elegante 18k and platinum solitaire for ladiesUS$ 1,088.00Total diamond weight .23ct1/3 carat diamond simple and elegante 18k and platinum solitaire for ladiesUS$ 938.00Total diamond weight .34ctPurity classic straight 1/6 carat diamond platinum solitaire for ladiesUS$ 1,050.00Total diamond weight .21ctFrances 1/4 carat diamond ring solitaire for ladies in platinumUS$ 938.00Total diamond weight .23ct