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4 Carat Heart-Shaped Platinum Laboratory-Grown Diamond Cathedral Ring with Graduated Pave Band
Price$3,699$7,398Ends Soon
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These 4 carat lab-grown diamond rings in platinum come with a 4 carat lab-grown diamond center already set, and the price includes it. Pick from ten shapes, including round, oval, cushion, radiant and emerald. Choose a plain or pavé solitaire, a halo or hidden halo, a cathedral ring, a three stone ring or a ring with pear or marquise side accents.
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
Platinum is dense and very durable. When it is scratched, the metal moves aside instead of wearing away, so prongs keep their mass over the years, which matters when they hold a large stone, and a worn prong can be rebuilt by a jeweler. It is naturally white, so it never needs plating, and over time it takes on a soft satin look that can be polished back to a shine.
Platinum feels heavier on the hand than gold because of its density. That weight is part of why many people choose it for a 4 carat platinum engagement ring. It is also hypoallergenic for most wearers. It costs more than gold, which is reflected in the prices on this page.
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.