Three round-cut diamonds and channel-set diamonds along the shank combine for show-stopping sparkle (1/2 ct. t.w.). Diamond ring set in 14k white gold. 1/2 Carat Three-Stone Diamond Ring. Wrapped & ready to give in a red gift box; while supplies last. 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.