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1.55 CTW Round Diamond Platinum Wedding Ring, Center 1.35CT VS1 G Color
In-store pricing snapshot
Last known warehouse price ยท Mar 11, 2026. Currently out of stock.
* Prices shown are for Costco members only.
This Costco round brilliant diamond platinum wedding ring features a striking 1.35 carat center stone with VS1 clarity and G color, bringing the total diamond weight to 1.55 carats. The ring is crafted in platinum, the most prestigious and durable precious metal for fine jewelry, prized for its natural white luster that enhances a diamond's brilliance without the need for rhodium plating.
VS1 (Very Slightly Included 1) clarity means the inclusions are minor and not visible to the naked eye, placing this diamond in the upper tier of the clarity scale. G color is considered near-colorless, offering an excellent balance of whiteness and value compared to the rarer D-F colorless grades. The round brilliant cut is the most popular diamond shape, engineered to maximize light reflection and fire, delivering exceptional sparkle from every angle.
The setting accommodates accent stones totaling an additional 0.20 carats alongside the center diamond. Costco's fine diamond jewelry typically includes GIA (Gemological Institute of America) grading documentation, providing independent verification of the diamond's specifications. Platinum construction ensures the ring is hypoallergenic, resistant to tarnish, and built to last a lifetime with proper care.