Make the moment even more special. B. Brilliant's exquisite bridal ring set features a round-cut engagement ring and matching band. Crafted in sterling silver and cubic zirconia (1-1/4 ct. t.w.). Sizes 5-9. Almost all gemstones and blue and black diamonds have been treated to enhance their beauty and require special care. All gemstone carat weights (ct. t.w.), if mentioned, are approximate; variance may be .05 carat. Ring Sizer.