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3 Carat Princess Cut Platinum Laboratory-Grown Diamond Halo Ring with Three-Row Pave Band
Price$5,809$11,618Ends Soon
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These 3 carat platinum princess cut rings arrive with a 3 carat lab-grown diamond center already set, so the price is for the finished ring. Choose a solitaire on a plain or pavé band, a cathedral setting, a halo, a hidden halo, a three stone ring or side accents in pear or marquise. Every ring is cast in platinum.
From timeless solitaires to dazzling halos and vintage-inspired designs, explore the most-loved engagement ring settings — and find the style that tells your story.
A single diamond, beautifully unadorned — the timeless, most-loved setting that puts your stone center stage.
Shop Solitaire Rings →A circle of pavé diamonds frames the center stone, adding sparkle and making it look noticeably larger.
Shop Halo Rings →Three diamonds symbolising your past, present and future — a meaningful design with extra brilliance.
Shop Three-Stone Rings →Tiny diamonds set along the band catch the light from every angle for all-over shimmer.
Shop Pavé Rings →Intricate milgrain and antique-inspired detailing, for a ring with timeless, heirloom character.
Shop Vintage Rings →Two interwoven bands of metal and diamonds create a modern, dynamic silhouette.
Shop Twisted Shank Rings →Keep exploring
Buying guide
A princess cut is a square brilliant with pointed corners, and those corners need firm prongs. Platinum is dense and strong, and when it is scratched the metal moves rather than wearing away, so prongs keep their hold over the years. Being naturally white, it frames a colorless square center without any warm tint and never needs replating. Over time it takes on a soft satin finish, which a polish can restore.
The 3 carat figure is the center alone. Accents are lab-grown diamonds that add to the ring's total.
A princess cut keeps weight in its corners, so a 3 carat princess cut lab-grown diamond ring measures a little narrower across than a round of the same weight. Its straight edges give a crisp, modern outline, and the crisscross facets beneath the table give lively sparkle across the whole square.
Each ring is made for you in 10–15 days. Shipping is free on orders over $500, returns are accepted within 30 days, and one resize is free within 60 days of delivery.
Prices start at about $2,350, and most rings in this collection cost between about $2,900 and $3,500. That covers the finished platinum ring with its 3 carat princess cut lab-grown diamond center already set. A plain solitaire sits at the lower end, while halo, three stone and pavé styles cost more. Lab-grown diamonds cost far less than natural diamonds of the same size.