0.28ctw Diamond Hidden Halo Engagement RingHidden halo 4 prong semi mount ring designed to fit a 2. 00ct radiant cut center (crown size), featuring a 1. 6mm wide shank. Set with 52 prong set round diamonds totaling 0. 28ctw along the 3 4 band and hidden halo. In store ring is a sample. Available by special order only. Other metal colors, types, diamond shapes, and sizes are also available by special order. Center sold separately.