Radiant and beautiful, this well-proportioned round-shape diamond (1 ct. T. W. Is definitely a cut-above. Certified by the Gemological Institute of America. This merchandise cannot be returned in store. See the Shipping & Returns tab for further details. 1 Carat Diamond. Diamond Color Rating Code: F. Diamond Clarity Rating Code: VVS2. Diamond Cut Grade: Excellent. Diamond Shape: Round. GIA Certificate of Assurance Included. Returns will not be accepted in stores and must be returned by mail directly to vendor. Boxes, or APOs. All gemstone carat weights (ct. T. W. If mentioned, are approximate; variance may be. 05 carat. After delivery, visit a Macy's store with your dated receipt and jewelry purchase to sign up.