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4.87 CTW Cushion Blue-Green Tourmaline & 0.36 CTW Diamond 18KT White Gold Pendant
In-store pricing snapshot
Last known warehouse price · Dec 21, 2025. Currently out of stock.
* Prices shown are for Costco members only.
A striking fine jewelry pendant featuring a cushion-cut blue-green tourmaline with a total gemstone weight of 4.87 carats, complemented by 0.36 carats total weight of accent diamonds, all set in 18-karat white gold.
Tourmaline is prized for its exceptional color range and clarity, and blue-green tourmaline in particular — sometimes called "Paraíba-style" or simply indicolite in hue — displays a vivid, ocean-inspired color that shifts between teal, seafoam, and deep aqua depending on the light. The cushion cut maximizes the stone's color saturation while lending a classic, romantic silhouette. The diamond accents enhance the gemstone's brilliance with added sparkle, and the 18KT white gold setting provides a bright, durable, and hypoallergenic mounting that lets the tourmaline's color take center stage.
This type of pendant is typically sold with a matching chain or offered chain-optional, and represents Costco's fine jewelry tier sourced from reputable gem suppliers.
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