- Zita 1/5 ct tw Diamond Halo Engagement Ring for Ladies in Platinum$1,200.00Total diamond weight .20ct1/3 carat diamond simple and elegante 18k and platinum solitaire for ladies$1,250.00Total diamond weight .34ctFrances 1/4 carat diamond ring solitaire for ladies in platinum$1,250.00Total diamond weight .23ct