This 1.00 carat total weight round brilliant diamond solitaire ring is crafted in 950 platinum (also available in 14kt yellow gold) and features a classic six-prong setting that securely showcases the center stone. The diamond grades VS2 (Very Slightly Included) for clarity and I (Near Colorless) for color, with a GIA cut grade of Very Good or better, ensuring exceptional brilliance and sparkle. Available in size 5, the ring is sizeable to any size by a professional jeweler (resizing service not provided by Costco).

Every ring includes a Jewelry Grading/Gemological Report from a certified gemological laboratory, as well as a GIA (Gemological Institute of America) Gem Trade Laboratory Diamond Grading Report certifying the diamond's characteristics under 10x magnification. Costco guarantees all diamonds supplied to be VS2 clarity or better and I color or better per industry grading standards.

Air shipping via insured UPS with required signature is included in the purchase price, with an estimated delivery of 2–3 business days. Returns on items containing a 1.00 ct or larger center diamond may require up to five business days for verification by a Graduate Gemologist before a refund is approved.