- 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 .34ctSacré-Coeur 14K Gold 2-Tone 2.00CT Diamond Solitaire with Heart Prongs and Surprise Diamonds Engagement RingUS$ 8,625.00Total diamond weight 2.08ct