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1.00 ct Round Brilliant Platinum Solitaire Ring, VS1 Clarity, H Color
In-store pricing snapshot
Last known warehouse price ยท Oct 21, 2025. Currently out of stock.
* Prices shown are for Costco members only.
This classic platinum solitaire ring features a 1.00 carat round brilliant cut diamond set in a polished platinum band. The diamond is graded VS1 (Very Slightly Included 1) for clarity, meaning inclusions are difficult to detect even under 10x magnification, and H color, placing it in the near-colorless range on the GIA color scale with only slight warmth detectable under close inspection.
The ring is crafted in platinum, a naturally white precious metal prized for its durability, density, and hypoallergenic properties. Platinum's hardness makes it an excellent choice for securing a center stone, as it does not wear away like gold over time. The solitaire setting keeps focus on the center diamond, allowing maximum light entry and brilliance.
Costco's diamond jewelry typically comes accompanied by a gemological grading report from an independent laboratory such as the GIA (Gemological Institute of America) or IGI, certifying the diamond's cut, color, clarity, and carat weight. The round brilliant cut is the most popular diamond shape, engineered with 57โ58 facets to maximize light return and sparkle.