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1.70 CT Round Brilliant Platinum Solitaire Ring, VVS1 Clarity, I Color
In-store pricing snapshot
Last known warehouse price ยท May 4, 2026. Currently out of stock.
* Prices shown are for Costco members only.
This elegant platinum solitaire ring features a 1.70 carat round brilliant cut diamond, set in a classic four-prong platinum mounting. The diamond is graded VVS1 (Very Very Slightly Included 1) for clarity, meaning inclusions are extremely difficult to detect even under 10x magnification, placing it in the near-flawless range. The stone carries an I color grade on the GIA scale, which falls in the near-colorless range and offers excellent value while the diamond still appears bright and white to the naked eye when set in platinum.
Platinum is one of the most durable and prestigious precious metals used in fine jewelry, with a naturally white luster that complements the diamond's brilliance without altering its color perception. The round brilliant cut is the most popular diamond shape, engineered to maximize light return and sparkle through its 57 or 58 facets. Costco diamonds at this grade level typically come accompanied by a diamond grading report from an independent gemological laboratory such as the GIA or IGI, certifying the stone's stated specifications.