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4 Carat Round Platinum Laboratory-Grown Diamond Solitaire Engagement Ring with Pave
Price$3,169$6,338Ends Soon
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These 4 carat round solitaire rings arrive with a round brilliant lab-grown diamond center already set and priced in. Choose a plain band, a thin band, a pave band or a cathedral mounting, in platinum or white, yellow or rose gold. If you are looking for a 4 carat round solitaire engagement ring that is ready to order as a complete piece, start here.
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 round brilliant has the most facets arranged for sparkle, so it returns light from every angle. At 4 carats the center is a large, even circle, and a solitaire mounting keeps the eye on it. The round shape also has no points or corners to protect, which makes it a practical everyday choice for a stone this size.
The rings differ mainly in the band. A rounded plain band feels smooth and classic, while a thinner plain band makes the center look even larger by contrast. Pave bands add a line of small lab-grown diamond accents along the shank. There is also a cathedral setting with a graduated pave band, where the metal arches up to hold the center, and a solitaire with a hidden halo of lab-grown diamonds tucked under the center. Any accents are extra weight; the 4 carats is the center alone.
Gold is offered in 10K, 14K or 18K, and platinum is a dense white metal that will not need replating. White gold and platinum make a colorless center look icy, while yellow and rose gold warm it. Prices include the 4 carat lab-grown diamond center and start from about $2,500 in the lowest-priced metal, with most rings starting between about $2,800 and $2,900.
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.