0.72 ctw Diamond Solitaire Engagement Ring18K white gold semi mount ring designed for a 2. 50ct round center in a 4 prong setting. Accented with 0. 72 carats of prong set round diamonds for added brilliance. 18K white gold semi mount ring designed for a 2. 50ct round center in a 4 prong setting. Accented with 0. 72 carats of prong set round diamonds for added brilliance. In store ring is a sample. Available by special order only. Other metal colors, types, diamond shapes, and sizes are also