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3.00 CTW Round Brilliant Diamond Platinum Three Stone Ring, 1.50 CT Center, VS2 Clarity, I Color, Size 7
In-store pricing snapshot
Last known warehouse price ยท Mar 22, 2026. Currently out of stock.
* Prices shown are for Costco members only.
This stunning platinum three stone ring features a 1.50 carat round brilliant center diamond flanked by two matching side diamonds, for a total diamond weight of 3.00 carats. The ring is crafted in 950 platinum, prized for its durability, natural white luster, and hypoallergenic properties.
All diamonds carry VS2 (Very Slightly Included) clarity, meaning inclusions are difficult to see even under 10x magnification, and I color (Near Colorless), offering excellent brilliance and value. The classic three stone design symbolizes the past, present, and future, making this ring a meaningful choice for engagements, anniversaries, or special occasions. Sized at 7.
Each ring includes a GIA (Gemological Institute of America) Diamond Grading Report certifying the center stone's characteristics. All diamonds are natural and untreated, sourced to Costco's high standards for quality and ethical sourcing.