Superior clarity and outstanding high-color sparkle are certified with the Gemological Institute of America for this dramatic cushion-cut diamond (3/4 ct. T. W. This Iberjoya merchandise cannot be returned in store. See the Shipping & Returns tab for further details. 3/4 Carat Diamond. Diamond Colour Rating Code: E. Diamond Clarity Rating Code: VS2. Diamond Shape: Cushion. GIA Certificate of Assurance Included. Returns will not be accepted in stores and must be returned by mail directly to vendor. Boxes, or APOs. Almost all gemstones 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. After delivery, visit a Macy's store with your dated receipt and jewellery purchase to sign up.